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The AR 15 and AR 10 use a "Gas Impingement" system to enable cycling of weapon. We have found that MOST Barrel Manufactures oversize the Barrel Gas Ports, this ensures complete cycling of the weapon. This simply put, over-gases the weapon which creates additional recoil, muzzle rise and shortens the service life of the weapon. We are now supplying Adjustable Gas Blocks on most of our AR 15 and ALL AR 10 Platforms.

An adjustable gas block is a simple device and at its core, it’s designed to allow the operator to control the amount of gas that flows into the gun. Typically you rotate a small screw and the amount of gas that can pass through the weapon is either increased or decreased. The hidden benefits of an Adjustable Gas Block are Less Recoil, Reduced Muzzle Rise and Longer Service Life of the Weapon.

Once you install your parts its time to hit the range and start the tuning process. You need to tune the rifle to the rounds you are going to use. Load several magazines with a single round.

Set the gas block to the most closed setting. Rack the weapon and fire. 99.99% of the time the gun will not cycle properly, that is to be expected. Now adjust the gas block one rotation, and fire again. It likely won’t cycle, and that’s okay. Repeat this process until the weapon cycles, and the bolt locks rearward on an empty magazine. Once the bolt locks to the rear of the rifle go ahead and give the adjustment screw on the gas block an extra ½ rotation. This final rotation is a just for reliability purposes. You want a little extra gas, to ensure the weapon is working after a few hundred rounds. At this point the ejected brass should be thrown between 2 to 5 O'clock.

Once you have the gun cycling reliably smile and enjoy that reduced recoil and muzzle rise
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Stainless Steel Gas Tube Stainless Steel Gas Tube

Stainless Steel Gas Tube

Low Profile Steel Gas Block 0.936 Low Profile Steel Gas Block 0.936

Gas Block 0.936

Our Price: $15.25
Low Profile Steel Gas Block 0.875 Low Profile Steel Gas Block 0.875

Gas Block 0.875

Our Price: $15.25
Low Profile Steel Gas Block 0.750 Low Profile Steel Gas Block 0.750

Gas Block 0.750

Our Price: $15.95
Adjustable .750 Low Profile Gas Block Adjustable .750 Low Profile Gas Block

Adjustable Gas Block

Our Price: $39.95
Odin Works .875 Adjustable Low Profile Gas Block Odin Works .875" Adjustable Low Profile Gas Block

Adjustable Gas Block .875

Our Price: $89.00
Odin Works .750 Adjustable Low Profile Gas Block Odin Works .750" Adjustable Low Profile Gas Block

Adjustable Gas Block .875

Our Price: $89.00
Odin Works .936" Adjustable Low Profile Gas Block Odin Works .936" Adjustable Low Profile Gas Block

Adjustable Gas Block .936

Our Price: $89.50
JP Enterprises Adjustable Gas Block .936 JP Enterprises Adjustable Gas Block .936

Adjustable Gas Block .936

Our Price: $97.50
SLR Sentry .875" Set Screw Version Low Profile Adjustable Gas Block. This Low Profile Adjustable Gas Block fits under most slim version handguards and requires 1.4" diameter opening.  Designed to allow the operator to fine tune the gas system SLR Sentry 8 Low Profile .875 Adjustable Gas Block

.875 Adjustable Gas Block

Our Price: $119.95
SLR Sentry .936 Set Screw Version Low Profile Adjustable Gas Block. This Low Profile Adjustable Gas Block fits under most slim version handguards and requires 1.4" diameter opening.  Designed to allow the operator to fine tune the gas system SLR Sentry 9 .936 Low Profile Adjustable Gas Block

.936 Adjustable Gas Block

Our Price: $119.95