Brownells Brownells Brownells 75th Anniversary - A Shooting Heritage

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:10, Page:015
Big Book Catalog, Issue:68, Page:017

SPECS: 17-4 PH stainless steel, oxide finish, matte black. Includes hex-head mounting bolts or set screws, and gas tube pin. All models are 1” (2.54cm) long. Models available to fit barrels with .625” O.D. or .750” at gas block position. Clamp-on models will not fit under small diameter free-float tubes or those with an exposed bottom rail channel on the inside of the handguard such as VLTOR VIS, Daniel Defense, and LaRue Tactical. .750” Clamp On - .926” (2.35cm) wide, 1.388” (3.52cm) tall. .625” Clamp On - .920” (2.33cm) wide, 1.370” (3.48cm) tall. .750” Set Screw - .907” (2.30cm) wide, .1.352” (2.43cm) tall. .625” Set Screw - .807” wide, 1.281” tall.

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4 Item(s)
AR-15 LOW PROFILE GAS BLOCK
100-003-996WB
Low-Profile Gas Block
100003996Low-Profile Gas Block

Mfr Part: GB2C

$65.99

In Stock

Inside Diameter: .750

Material: Steel

Style: Clamp, Low-Profile

GB-1C GAS BLOCK CLAMP-ON 625
100-011-110WB
Gas Block Clamp-On 625
100011110Gas Block Clamp-On 625

Mfr Part: GB1C

$65.99

In Stock

Inside Diameter: .625

Material: Steel

Style: Low-Profile

GB-2S GAS BLOCK SET SCREW 750
100-011-111WB
Gas Block Set Screw 750
100011111Gas Block Set Screw 750

Mfr Part: GB2S

$58.99

In Stock

Inside Diameter: .750

Material: Steel

Style: Low-Profile

GB-1S GAS BLOCK SET SCREW 625
100-011-112WB
Gas Block Set Screw 625
100011112Gas Block Set Screw 625

Mfr Part: GB1S

$58.99

In Stock

Inside Diameter: .625

Material: Steel

Style: Low-Profile

AR-15/M16 LOW-PROFILE GAS BLOCK