Brownells Brownells Brownells 75th Anniversary - A Shooting Heritage

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 carbines. 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:10, Page:014
Big Book Catalog, Issue:68, Page:016
New Product Supplement, Issue:566, Page:021
Sinclair, Issue:5A, Page:249

SPECS: Standard - Available in 6061 T6 aluminum, hardcoat anodized, matte black, or 416 stainless steel, natural silver or black oxide finish. 17⁄8" (4.7cm) long, .950" (2.4cm) wide. .750" (19mm) I.D. Heavy - Aluminum, hard anodized, matte black. 17⁄8" long, 1¼" (3.2cm) wide. .936" (23.7mm) I.D. Low Profile - Carbon steel, matte black. 17⁄8" long, 1" (2.5cm) wide. .750" I.D. Heavy Low Profile - Aluminum, hardcoat anodized, matte black. 17⁄8" (4.7cm) long, 17⁄16" (3.6cm) wide. .936" I.D. 2.6 oz. (74g) weight. Minimum 1.750" handguard I.D. recommended for proper clearance. A2-Style - 416 stainless steel, matte black oxide finish. 17⁄8" long, 7⁄8" (2.2cm) wide, 33⁄8" (8.6cm) high, .750” I.D.

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.750 ADJ GAS SYSTEM & A2 CLAMP-ON SIGH
452-000-065WB
A2-Style Gas Block
452000065A2-Style Gas Block

Mfr Part: JPGS2FS

$142.99

In Stock

Inside Diameter: .750

Material: Stainless Steel

Style: Adjustable, Clamp

AR15/M16 LOW PROFILE ADJ GAS BLOCK
452-000-148WB
Low Profile Adjustable Gas Black .750" bore, Black SS
452000148Low Profile Adjustable Gas Black .750" bore, Black SS

Mfr Part: JPGS5B

$75.99

Out of Stock

Inside Diameter: .750

Material: Black Stainless Steel

Style: Adjustable, Clamp, Low-Profile

Other Matches

AR-15 STANDARD ADJUSTABLE GAS BLOCK
452-015-110WB
Standard Gas Block, Aluminum
452015110Standard Gas Block, Aluminum

Mfr Part: JPGS1

$66.99

In Stock

Inside Diameter: .750

Material: Aluminum

Style: Adjustable

STANDARD BBL. SS GAS BLOCK
452-000-023WB
Standard Gas Block, Stainless
452000023Standard Gas Block, Stainless

Mfr Part: JPGS2S

$85.99

In Stock

Inside Diameter: .750

Material: Stainless Steel

Style: Picatinny

.750 ADJUSTABLE GAS BLOCK, S/S, BLACK
452-000-068WB
Standard Gas Block, Black Stainless
452000068Standard Gas Block, Black Stainless

Mfr Part: JPGS2B

$85.99

In Stock

Inside Diameter: .750

Material: Stainless Steel

Style: Adjustable

JPGS-3 AR-15 HEAVY BARREL GAS BLOCK
452-015-111WB
Heavy Gas Block
452015111Heavy Gas Block

Mfr Part: JPGS3

$75.99

In Stock

Inside Diameter: .936

Material: Aluminum

Style: Adjustable

AR ADJUSTABLE GAS SYSTEM
452-000-122WB
AR Adjustable Gas System, Low Profile .936" bore, Aluminum
452000122AR Adjustable Gas System, Low Profile .936" bore, Aluminum

Mfr Part: JPGS8

$85.99

In Stock

Inside Diameter: .936

Material: Aluminum

Style: Adjustable

AR-15/M16 ADJ GAS BLOCK .750 S/S
452-000-177WB
Low Profile Adjustable Gas Block .750" Stainless Steel
452000177Low Profile Adjustable Gas Block .750" Stainless Steel

Mfr Part: JPGS5S

$75.99

In Stock

Inside Diameter: .750

Material: Stainless Steel

Style: Adjustable

AR-15/M16 GAS BLOCK ADT .936 TO .875
452-000-178WB
AR-15/M16 Gas Block Adapter .936 to .876
452000178AR-15/M16 Gas Block Adapter .936 to .876

Mfr Part: JPGSA

$24.95

In Stock

Inside Diameter: .876

Material: Stainless Steel

Style: Adjustable

AR-15/M16 ADJUSTABLE GAS BLOCKS