AR-15/M16 Adjustable Gas Block

Name: AR-15/M16 Adjustable Gas Block
Brand: Seekins Precision
Availability: InStock

Seekins Precision · Gas System

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Best price

$66.00at Ammunition Depot

In stock checked Oct 21, 2026

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Store	Price	Availability	Buy	Add to build
Ammunition Depot Best price	$66.00checked Oct 21, 2026	In stock	Buy at Ammunition Depot
Brownells	$62.99checked Oct 21, 2026	Out of stock	Buy at Brownells

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: $66.00 at Ammunition Depot. Dashed line = out of stock. Tracking since Sep 27, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
Ammunition Depot	$66.00	$66.00	$68.99
Brownells	$62.99	$62.99	$62.99

Since Sep 27, 2026.

About this part

The AR-15/M16 Adjustable Gas Block is an AR-15 gas system part from Seekins Precision. It's sold by 2 stores (1 in stock), from $62.99 to $66.00. The lowest in-stock price in the last 30 days was $66.00 at Ammunition Depot.

Specifications

Manufacturer: Seekins Precision
Platform: AR-15

From the manufacturer

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:70, Page:014