SUPERLATIVE ARMS adjustable gas block for AR15 / AR10 diameter .750"

Available from stock with us. Please pay attention to the respective delivery time indication.

The Superlative Arms "Bleed Off" direct impingement gas block offers the user repeatable adjustment options for all common AR barrel diameters. Unlike nearly all other adjustable gas blocks, this system works by venting excess gas, known as "bleed off," rather than restricting the amount of gas flowing into the system. This has the advantage of allowing the system to run cooler and more consistently, as gas pressure spikes are better balanced, and less gas is blown back towards the shooter when using a suppressor because the accumulating gas escapes through the gas port rather than flowing into the system. The gas is vented forward, away from the shooter.

Since the gas flow is not blocked by a screw, this screw cannot be contaminated and blocked by residues. Additionally, the mechanism for the click adjustment is located outside the gas block, preventing contamination. The adjustment also features a lock that prevents unintentional unscrewing at the end of the adjustment range - disassembly is still possible. The "Adjustable Gas Block, Bleed Off" offers a total of 30 reproducible (click-adjustment) settings.

All variants of the Superlative Arms gas blocks are made from 416 Stainless Steel, with the black model featuring a Melonite finish. The gas port is secured in the mounted position by 2 set screws; most barrels have pre-drilled locking holes for this purpose.

PLEASE NOTE!
The gas block is delivered in the closed position - in this setting, firing should be avoided! Before using the gas block, it is necessary to unscrew the adjustment screw by 18 clicks (4.5 turns, 4 clicks per turn) - the gas port is now in the open standard position and behaves like a normal, non-adjustable gas block. This is the reference with which shooting should begin to ensure proper installation. Now the 30 adjustment positions are available to you.

A detailed installation manual is included with each gas block. You can find the installation manual online here.

The installation should be carried out by a qualified person!
There may always be slight deviations in the positioning of the gas port or the locking holes for the gas port from manufacturer to manufacturer.

You can find the necessary gas tube here.

Product details:

Superlative Arms Adjustable Gas Block

Bleed Off
Solid, Set Screw
Melonite Finish, black


Barrel diameter:

.625" - 15.875mm

for ultra-light "pencil barrel"


.750" - 19.05mm

Standard, for nearly all barrels


.875" - 22.225mm

for match barrels


.936" - 23.774mm

for bull barrels




30 adjustment options

Adjustment from the front with 3/32" hex key

Scope of delivery:

Gas port
2x 6-32x3/8" T15 screws
1x roll pin for gas tube
1x 3/32x6" L-key, Torx T15 key
1x installation manual

We recommend installation by a knowledgeable person.

Superlative Arms, LLC. originally comes from the aerospace industry with over 30 years of experience in development and manufacturing. They now produce gas blocks and piston kits for the AR15 & AR10 based on patented in-house developments.