• AR-15 GAS BLOCK LOW PROFILE YANKEE HILL MACHINE CO., INC. More Detail

    AR-15 GAS BLOCK LOW PROFILE YANKEE HILL MACHINE CO., INC.

    $19.80 - $59.70$19.80 - $59.70

    Unique, all-steel gas blocks expand the versatility of your rifle by providing a variety of accessory rail and handguard mounting options. Especially helpful in customizing short-barrelled tactical rifles. Machined from bar stock for extra strength and rigidity, then mil-spec Parkerized for exceptional wear- and corrosion-resistance. Low Profile version is a low and narrow, one-piece block designed to fit inside most free-float handguards; allows use of rifle length forearms on carbine length barrels for a clean, streamlined look and added gripping surface. Secures to barrel with included setscrews. Low Profile 2 is shorter and lighter than the Low Profile, and allows rifle length forearms to fit carbine-length barrels. Low Profile Slotted has a slot cut into the bottom for easy mounting and dismounting; slide the block into position and tighten the two pinch screws to snug it securely to the barrel. AR-15, Issue:11, Page:016 Big Book Catalog, Issue:69, Page:015

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  • AR-15/M16 GAS BLOCKS SADLAK INDUSTRIES More Detail

    AR-15/M16 GAS BLOCKS SADLAK INDUSTRIES

    $26.99 - $49.99$26.99 - $49.99

    Minimal Profile to Fit Under Handguard Or With Integral Accessory RailAluminum or steel gas blocks give the choices you need to create a custom-built rifle with a mission-specific configuration. Mounts securely to barrel with included setscrews. Clamp-on models squeeze around the barrel as you tighten the side-mounted setscrews. Slip-on models are anchored by setscrews on the underside. Low Profile fits under a free-float handguard and lets you use a longer on carbine-length barrels for a clean, streamlined look with more gripping surface. Extended Nose is like Low-Profile, but with an extended sleeve that covers taper pin holes left by the issue A2-style sight tower. Varmint fits heavy .936" O.D. barrels. Bull Barrel includes a 3-slot, low or high Picatinny rail for mounting accessories. AR-15, Issue:11, Page:016 Big Book Catalog, Issue:69, Page:015

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  • AR-15/M16 GEN II ADJUSTABLE GAS BLOCK SYRAC ORDNANCE More Detail

    AR-15/M16 GEN II ADJUSTABLE GAS BLOCK SYRAC ORDNANCE

    $106.95 - $114.99$106.95 - $114.99

    For Easy Adjustment Of Gas Flow In The Field Or At The Range Refinement of Syrac's original adjustable gas block enables the shooter to fine-tune gas flow and rifle performance in the field. Designed to fit under free-floating handguards, the block secures to the barrel with two setscrews. The Gen II model eliminates the Gen I's release button, so you simply turn the gas adjustment setscrew with the included Allen wrench to one of 18 pre-set click detent positions. Click detent automatically locks in your setting; also makes "dialing in" predetermined settings for different loads easy. Standard Low-Pro models have setscrews on the underside; requires dimpling of the barrel. Clamp-On model wraps around the barrel and is secured with two side-mounted hex head cap screws. AR-15, Issue:11, Page:016 Big Book Catalog, Issue:69, Page:016 Sinclair, Issue:5B, Page:249

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  • AR-15 GAS BLOCK LOW PROFILE TROY INDUSTRIES, INC. More Detail

    AR-15 GAS BLOCK LOW PROFILE TROY INDUSTRIES, INC.

    $35.99$35.99

    Won't Interfere With Extended-Length Tactical ForearmsMinimal-profile replacement for factory front sight/gas block wont interfere with extended-length tactical forearms, while ensuring proper function of gas system for reliable cycling. Protrudes only .420" above barrel, covers less than 1" of barrel length, and adds only 1.4 oz. of weight. Compatible with M4-style carbines and M16A2/A3/A4-style rifles with any length, .750" O.D. barrel. Two steel setscrews keep the block securely anchored to the barrel to prevent shifting even under the force of full-auto recoil. Black oxide finish matches most factory barrel finishes. AR-15, Issue:11, Page:017 Big Book Catalog, Issue:69, Page:016

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  • AR-15 GAS BLOCK LOW PROFILE MIDWEST INDUSTRIES, INC. More Detail

    AR-15 GAS BLOCK LOW PROFILE MIDWEST INDUSTRIES, INC.

    $39.99 - $42.99$39.99 - $42.99

    One-Piece Design & Tough Steel ConstructionOne-piece, low profile, steel gas block fits under most free-float handguards for a clean, uncluttered look. Models available to fit .625", .750" or . 936" O.D. barrels. Locks securely to barrel with three steel setscrews. AR-15, Issue:11, Page:015 Big Book Catalog, Issue:69, Page:015

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  • AR-15/M16 ADJUSTABLE GAS BLOCK SEEKINS PRECISION More Detail

    AR-15/M16 ADJUSTABLE GAS BLOCK SEEKINS PRECISION

    $57.99$57.99

    Lets You Adjust Gas Output For Reliable Extraction/Ejection Steel gas block lets you adjust the amount of gas flow, so you can tune gas output for reliable extraction and ejection with different ammo types. Brass friction screw holds adjustments without thread locker and won’t mar the adjustment screw. Fits under free-float handguards on .750" O.D. barrels. Dual bottom screws secure block to barrel. Requires Allen wrench, not included. AR-15, Issue:11, Page:015 Big Book Catalog, Issue:69, Page:016

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  • AR-15 GAS BLOCK FRONT SIGHT YANKEE HILL MACHINE CO., INC. More Detail

    AR-15 GAS BLOCK FRONT SIGHT YANKEE HILL MACHINE CO., INC.

    $86.00 - $111.40$86.00 - $111.40

    Immediate Response Sighting For Tactical EmergenciesMulti-purpose front sight works as a fully functional gas block, plus delivers lifesaving backup when primary optics fail or become hindered by low light or poor weather conditions. Machined, steel body features a spring-loaded pushbutton that locks sight in the deployed position. When not in use, simply depress the button and fold down for an unobstructed view through your optics. Protective ears guard the sight post from blows incurred during duty. Split, barrel clamp design allows easy mounting to standard contour barrels without removal of flash hiders or muzzle brakes. Hex cap screws pull clamping halves tight to barrel for complete sight immobilization when properly tightened. Durable, mil-spec, phosphate finish resists rust and corrosion. YHM-9394 includes bayonet lug and pivoting sling swivel that accepts tactical slings up to 1" wide. Rubber coating prevents swivel from rattling and giving away your position while on patrol. YHM-9395 has sling swivel, no bayonet lug. YHM-9835A has Picatinny-style under-rail that accepts lights, lasers, and other forward-mounted accessories. No sling swivel. AR-15, Issue:11, Page:017 Big Book Catalog, Issue:69, Page:016

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  • AR-15/M16 ADJUSTABLE GAS BLOCKS J P ENTERPRISES More Detail

    AR-15/M16 ADJUSTABLE GAS BLOCKS J P ENTERPRISES

    $75.99 - $142.99$75.99 - $142.99

    Pressure Adjustable For Smoother Cycling Replaces the factory front sight/gas block and allows you to tune the gas system for smoother cycling and operation. Especially critical on match and varmint rifles when shooting both factory and custom-loaded ammunition. Simple setscrew lets you control the gas flow, so you can customize the setting for each load. Hex head setscrews clamp the block securely to the barrel. Installation instructions included.   Standard   model features a topside Picatinny rail for mounting flip-up front sights and other accessories. Available in lightweight aluminum or stainless steel for additional muzzle weight. Fits barrels with .750" O.D. at gas block.  Heavy  - Aluminum, with rail, fits heavy barrels with .936" O.D. Low Profile model fits under handguard on .750" barrels. Rugged, all-steel construction resists gas erosion and helps maintain rifle’s weight distribution. Heavy Low Profile aluminum block fits under handguard on barrels with .936" O.D. Eight  Torx T15 screws securely clamp the block to the barrel. A2-Style – Retains the classic look of military rifles and carb ines. Two side-mount hex head screws clamp the block securely to barrels with .750" O.D. at the gas block position. Rugged, stainless steel construction resists gas erosion and helps maintain rifle’s weight distribution. Hard, abrasion-resistant black oxide finish. JPGS-5B and JPGS-5S Low-Profile models have a slimmer profile to reduce weight and to fit under a wider variety of handguards. JPGSA is an adapter designed to allow use of a .936 gas block with a .875 barrel. AR-15, Issue:11, Page:016 Big Book Catalog, Issue:69, Page:015 Sinclair, Issue:5B, Page:249

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  • AR-15/M16 LOW PROFILE GAS BLOCKS BRAVO COMPANY More Detail

    AR-15/M16 LOW PROFILE GAS BLOCKS BRAVO COMPANY

    $44.99$44.99

    Heavy Duty Low Profile Block Fits Under Most Handguards Designed to fit AR-15 and M16 barrels, the BCM low-profile gas block is machined from high quality steel to Mil-Spec tolerances. Gas block includes set screws for mounting and a phosphate finish for corrosion and wear resistance. Available with either .625" or .750" inside diameter. AR-15, Issue:11, Page:014 Big Book Catalog, Issue:69, Page:013

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  • AR-15 GAS BLOCK LOW PROFILE VLTOR WEAPON SYSTEMS More Detail

    AR-15 GAS BLOCK LOW PROFILE VLTOR WEAPON SYSTEMS

    $58.99 - $65.99$58.99 - $65.99

    One-Piece Design Fits Under Free-Float Handguards Slim replacement for cumbersome USGI front sight/gas block tower features a low profile for a more streamlined appearance and less chance of snagging on vegetation and other gear. Covers only 1" of barrel length and reduces weapon’s forward weight for improved handling and maneuverability. Clamp On models squeeze around the barrel with included socket head screws. Set Screw models use included set screws at the bottom of the unit to anchor the gas block to the barrel for the lowest-profile installation. AR-15, Issue:11, Page:017 Big Book Catalog, Issue:69, Page:016

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  • AR-15/M16 SUPER GAS BLOCK LOW PROFILE ALG DEFENSE More Detail

    AR-15/M16 SUPER GAS BLOCK LOW PROFILE ALG DEFENSE

    $39.00 - $69.00$39.00 - $69.00

    Low Profile Fits Easily Under Long Free-Float Tubes Minimal-bulk gas block fits easily under most free-float rails. All-steel construction provides plenty of strength to resist erosion from hot gas. Precisely machined for a close slip fit on standard .750" OD barrels. Includes mounting hardware and instructions. Gunsmith installation recommended. AR-15, Issue:11, Page:015 Big Book Catalog, Issue:69, Page:015

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  • AR-15 TITANIUM .750 More Detail

    AR-15 TITANIUM .750" DIAMETER GAS BLOCK BATTLE ARMS DEVELOPMENT INC.

    $89.95 - $99.95$89.95 - $99.95

    Low Profile Gas Block for .750" Diameter Gas Block Journal  Ultralightweight 0.03 lbs (0.48oz) with SS Screws  Precision CNC from Grade 5 Titanium  (2) Stainless Steel Set Screws Included  Distinctive "C-Shaped" Profile for Function and Elegance

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  • AR-15 GAS BLOCK KIT MODULAR BROWNELLS More Detail

    AR-15 GAS BLOCK KIT MODULAR BROWNELLS

    $13.99 - $54.99$13.99 - $54.99

    Unique, Modular Design For Ultimate CustomizationEasy-to-install gas block features an integral fixed rail and a modular design that allows fast installation and removal of up to three, additional Picatinny rails for mounting lasers, lights, night vision optics, back-up sights, and a variety of other tactical accessories. Side and bottom rails attach easily with two screws, so you can configure the unit for each mission’s requirements. Precision-machined from rugged, 6061 billet aluminum for superior strength without weighing down your weapon. Mounts securely to barrel with three, hardened steel setscrews. AR-15, Issue:11, Page:014 Big Book Catalog, Issue:69, Page:014 Sinclair, Issue:4B, Page:224

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  • AR-15 ADJUSTABLE GAS BLOCK .875 More Detail

    AR-15 ADJUSTABLE GAS BLOCK .875" CLAMP ON SUPERLATIVE ARMS LLC

    $89.99$89.99

    he Superlative Arms patented “Bleed Off”, direct impingement, gas block for the AR15 platform adjusts the gas flow by bleeding the gas out of the block instead of restricting the flow like conventional adjustable blocks.   Results: The pressure used in the block is reduced only to the amount required to drive the bolt carrier. The remaining gas / pressure are bled out of the block allowing the system to run much cleaner and cooler. Reduction of felt recoil. Patent pending adjustment detent is located outside of the block and therefore no contamination. The gas adjustment screw does not restrict the gas flow; therefore there is no erosion or seizing of the screw / no loss of detent due to carbon build up.  Although it is removable, we have added a safety mechanism, which stops you from unintentionally backing the screw all the way out. When using SBR’s and / or suppressors the bleed off port allows the excessive pressure to be exhausted out of the block reducing blow back. Data:     Gas Block Material: 416 SS Barrel Diameter: 0.875" Weight: t/b/d oz. Length: 1.00" Attachment Type: Clamp On Gas Adjustment:  (Patent Pending) 30 Locked Positions, Front Of Block Bleed Off Port:  (Patent Pending) Front Of Block Included: Gas Block - Assembled (2) 10-32 x 3/16" Socket Head Cap Screws (1) Gas Tube Roll Pins (1) 3/32 X 6" L-Shaped Hex Keys Installation Instructions & QR code for video tutorial

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  • AR-15/M16 PICATINNY RAIL GAS BLOCK DOUBLE STAR More Detail

    AR-15/M16 PICATINNY RAIL GAS BLOCK DOUBLE STAR

    $29.99 - $31.99$29.99 - $31.99

    Ensures Reliable Gas Flow; Models For Three Popular Barrel DiametersCompact gas block clamps securely to barrel with a unique three-point attachment system to provide a solid accessory mounting platform and ensure proper gas system alignment for reliable cycling. Precision machined from high-grade 6061 T6 aluminum for an ideal combination of strength and low weight, with an integral MIL-STD 1913 Picatinny rail on the topside. Anchors to the barrel with a pair of hex-head setscrews on the underside, plus a third screw on top to ensure a superior gas seal and resist unwanted movement that can impair gas system function. Streamlined design has clean, good-looking, angular lines with all exposed edges radiused to eliminate sharpness. Mil-spec hardcoat anodized for superior surface strength and wear resistance with an even, matte black finish that matches most manganese phosphate Parkerized barrel finishes. Models available to fit three common barrel outside diameters: hard-to-find .625" for A1 barrels, .750" for H-Bar and similar-style barrels, and .937" for bull barrels. AR-15, Issue:11, Page:015 Big Book Catalog, Issue:69, Page:014

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  • AR-15 GAS BLOCK LOW PROFILE BROWNELLS More Detail

    AR-15 GAS BLOCK LOW PROFILE BROWNELLS

    $34.99 - $39.99$34.99 - $39.99

    Lightweight, Minimal Profile To Fit Under Tactical Handguards & Free-Float TubesLow-profile gas block fits under just about any extended handguard while ensuring proper gas flow to keep your rifle cycling reliably. Precision machined from lightweight, yet tough, 6061 T6 aluminum, so it won’t add unwanted forward weight. Slide over the barrel and anchor in position by tightening the three, flush-mounted steel hex screws on the underside to ensure it won’t shift even under sustained full-auto fire. For installations where the gas block is exposed, rounded edges give a “melted” profile that won’t snag on foliage or other gear. Hardcoat anodized for additional strength and resistance to surface wear; matte black finish blends with most factory gun finishes. AR-15, Issue:11, Page:014 Big Book Catalog, Issue:69, Page:014

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  • AR-15 GAS BLOCK PICATINNY YANKEE HILL MACHINE CO., INC. More Detail

    AR-15 GAS BLOCK PICATINNY YANKEE HILL MACHINE CO., INC.

    $59.70 - $74.20$59.70 - $74.20

    Picatinny Options To Fit Your Application Unique, all-steel gas blocks expand the versatility of your rifle by providing a variety of accessory rail and handguard mounting options. Especially helpful in customizing short-barrelled tactical rifles. Machined from bar stock for extra strength and rigidity, then mil-spec Parkerized for exceptional wear- and corrosion-resistance. One-piece, 4-Rail model features top/bottom and side rails that accept Weaver or Picatinny mounted, tactical accessories, including the Yankee Hill Gas Block Front Flip Sight. Secures to barrel with included setscrews. 2-Rail gas block is an easy-to-install, two-piece unit that clamps around the barrel using four hex screws; includes machined top and bottom Picatinny rails only. Single-Rail w/Lug & Swivel adds a top-side Picatinny rail for mounting accessories, and provides a bayonet lug and sling mount like an A2 gas block/front sight tower. Two-piece design clamps your rifle’s standard contour, .750" diameter barrel with four, capscrews—no need to remove muzzle brake or flash suppressor to install. Bayonet lug accepts a mil-spec bayonet or lug-mounted bipod, and pivoting, rubber-coated sling swivel accepts tactical slings up to 1¼" wide. Single Rail has four Picatinny slots on top. Clamps to your rifle’s standard contour, .750" O.D. barrel with two setscrews. Single-Rail A1 fits skinny .625" O.D. M16A1-style barrel and provides four Picatinny rail slots to let you install a clamp-on auxiliary “iron” sight or other accessory. Slides over barrel (flash hider must be removed to install) and clamps with two hex head screws. AR-15, Issue:11, Page:016 Big Book Catalog, Issue:69, Page:015

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  • AR-15/M16 .625 More Detail

    AR-15/M16 .625" CLAMP-ON LOW PROFILE GAS BLOCK DANIEL DEFENSE

    $58.00 - $61.00$58.00 - $61.00

    Clamp-on Low Profile .625"or .750" gas blocks provide a simple and durable installation.  Blocks are machined from steel features a matte black finsih.

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  • AR-15 GAS BLOCK MK12 BADGER ORDNANCE More Detail

    AR-15 GAS BLOCK MK12 BADGER ORDNANCE

    $65.00 - $69.00$65.00 - $69.00

    Provides Maximum Clearance For Optics Or Free-Float Handguards Slim, low-profile replacement for factory front sight gas block provides maximum clearance for optics and free-float handguards. Streamlined profile reduces forward weight and improves your rifle’s appearance. Set screws, gas tube mounting pin, and installation instructions included. Mk 12 is an exact copy of the gas manifold on the Mk12 Mod 1 and Mk 18 Mod 1 Special Purpose Rifles used by the U.S. Army and Navy. Made from 416 stainless steel with a tough, wear-resistant black oxide finish, and fits barrels with .750" O.D. Mk 12 Style in natural stainless, has the same low profile as the Mk12 Mod 1 gas manifold, and fits barrels with .875" O.D. AR-15, Issue:11, Page:014 Big Book Catalog, Issue:69, Page:013

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  • AR-15 GAS BLOCK PICATINNY MIDWEST INDUSTRIES, INC. More Detail

    AR-15 GAS BLOCK PICATINNY MIDWEST INDUSTRIES, INC.

    $64.99$64.99

    Tough Steel ConstructionSteel gas block with integral Picatinny rail has extra height that lets you mount a flip up or co-witness front sight on the same plane as the receiver rail of your flattop AR-15/M16. Add a Picatinny rail handguard to have a continuous rail extending from the receiver to the gas block for superb accessory mounting flexibility. Precision machined from tough 4140 billet steel to stand up to tens of thousands of rounds without eroding. Fits .750" O.D. barrels, and locks securely to barrel with three setscrews. AR-15, Issue:11, Page:015 Big Book Catalog, Issue:69, Page:015

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  • AR-15 ADJUSTABLE LOW-PROFILE GAS BLOCK PRECISION REFLEX, INC. More Detail

    AR-15 ADJUSTABLE LOW-PROFILE GAS BLOCK PRECISION REFLEX, INC.

    $69.99$69.99

    Lets You Tailor Extraction & Ejection To Individual LoadsLightweight, steel gas block features an adjustable gas port that lets you tune the amount of gas for reliable extraction and ejection to match your ammo. Adjustment screw closes or opens the port in the block and not the gas tube; drilling of the gas tube is not required. Fits under free float tubes and does not interfere with sight picture through scopes or red-dot sights. Dual set screws on bottom of the block securely locks the block onto the barrel. AR-15, Issue:11, Page:017 Big Book Catalog, Issue:69, Page:016

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  • AR-15 ADJUSTABLE GAS BLOCK .625 More Detail

    AR-15 ADJUSTABLE GAS BLOCK .625" SOLID SUPERLATIVE ARMS LLC

    $89.99$89.99

    The Superlative Arms patented “Bleed Off”, direct impingement, gas block for the AR15 platform adjusts the gas flow by bleeding the gas out of the block instead of restricting the flow like conventional adjustable blocks.  Results: The pressure used in the block is reduced only to the amount required to drive the bolt carrier. The remaining gas / pressure are bled out of the block allowing the system to run much cleaner and cooler. Reduction of felt recoil. Patent pending adjustment detent is located outside of the block and therefore no contamination. The gas adjustment screw does not restrict the gas flow; therefore there is no erosion or seizing of the screw / no loss of detent due to carbon build up.  Although it is removable, we have added a safety mechanism, which stops you from unintentionally backing the screw all the way out. When using SBR’s and / or suppressors the bleed off port allows the excessive pressure to be exhausted out of the block reducing blow back.  Data:    Gas Block Material: 416 SS Barrel Diameter: 0.625" Weight: 1.37 oz. Length: 1.00" Attachment Type: Solid Gas Adjustment:  (Patent Pending) 30 Locked Positions, Front Of Block Bleed Off Port:  (Patent Pending) Front Of Block Included: Gas Block - Assembled (2) 10-32 x 3/16" Set Screws (1) Gas Tube Roll Pins (1) 3/32 X 6" L-Shaped Hex Keys Installation Instructions & QR code for video tutorial

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  • AR-15 ADJUSTABLE GAS BLOCK .875 More Detail

    AR-15 ADJUSTABLE GAS BLOCK .875" SOLID SUPERLATIVE ARMS LLC

    $89.99$89.99

    The Superlative Arms patent pending “Bleed Off”, direct impingement, gas block for the AR15 platform adjusts the gas flow by bleeding the gas out of the block instead of restricting the flow like conventional adjustable blocks.   Results: The pressure used in the block is reduced only to the amount required to drive the bolt carrier. The remaining gas / pressure are bled out of the block allowing the system to run much cleaner and cooler. Reduction of felt recoil. Patent pending adjustment detent is located outside of the block and therefore no contamination. The gas adjustment screw does not restrict the gas flow; therefore there is no erosion or seizing of the screw / no loss of detent due to carbon build up.  Although it is removable, we have added a safety mechanism, which stops you from unintentionally backing the screw all the way out. When using SBR’s and / or suppressors the bleed off port allows the excessive pressure to be exhausted out of the block reducing blow back.                                       Data:     Gas Block Material: 416 SS Finish: Melonite, QPQ Barrel Diameter: 0.875" Weight: T/B/D oz. Length: 1.00" Attachment Type: Solid Gas Adjustment:  (Patent Pending) 30 Locked Positions, Front Of Block Bleed Off Port:  (Patent Pending) Front Of Block Included: Gas Block - Assembled (2) 10-32 x 3/16" Set Screws (1) Gas Tube Roll Pins (1) 3/32 X 6" L-Shaped Hex Keys Installation Instructions & QR code for video tutorial

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  • AR-15 GAS BLOCK ASSEMBLIES, LOW PROFILE CMMG More Detail

    AR-15 GAS BLOCK ASSEMBLIES, LOW PROFILE CMMG

    $39.95$39.95

    Made from 4140 Chrome Moly Steel, the low profile gas blocks come with the gas block and installation screws. Available in .625", .750", and .936" diameters.

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