AR-15/M16 Picatinny Rail Gas Block - .750" Picatinny Gas Block

Name: AR-15/M16 Picatinny Rail Gas Block - .750" Picatinny Gas Block
Brand: Double Star
Availability: InStock

Double Star · Gas System

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AR-15/M16 Picatinny Rail Gas Block - .750" Picatinny Gas Block

Best price

$33.99at MidwayUSA

In stock Lowest in 30 dayschecked Nov 13, 2026

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Fits and works with

Gas block: 0.75" diameter · Gas blocks

Specifications

Manufacturer: Double Star
Color: Black
Size: .750
Material: Aluminum

Where to buy

Store	Price	Availability	Buy
MidwayUSA Best price	$33.99checked Nov 13, 2026	In stock	Buy at MidwayUSA
Brownells 17.76% off · ends Nov 15 · exclusions apply	$28.99checked Nov 13, 2026	Out of stock	Buy at Brownells
OpticsPlanet	$39.99Salechecked Nov 13, 2026	Out of stock	Buy at OpticsPlanet

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

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Lowest in-stock price in the last 30 days: $33.99 at MidwayUSA. Dashed line = out of stock. Tracking since Sep 28, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
Brownells	$28.99	$28.99	$28.99
MidwayUSA	$33.99	$33.99	$33.99
OpticsPlanet	$39.99	$36.99	$39.99

Since Sep 28, 2026.

About this part

The AR-15/M16 Picatinny Rail Gas Block - .750" Picatinny Gas Block is a gas system part from Double Star. It's sold by 3 stores (1 in stock), from $28.99 to $39.99. The lowest in-stock price in the last 30 days was $33.99 at MidwayUSA.

From the manufacturer

Compact 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 anodize Mfg: Double Star SPECS: 6061 T6 aluminum, hardcoat anodized, matte black. All models 1.875" (cm) long. Rail heights are measured from top of barrel to top of rail. .625" - 1" (2.5cm) wide, 1.5" (3.8cm) overall height, .600" (1.5cm) rail height. 3 oz. (84g) weight. .750" - 1&rdq