The Seekins Precision .875 Low Profile Adjustable Gas Block (brand part no. 11510087F) lets builders fine tune a rifle’s gas system for smoother cycling and operation. Tuning gas flow is most useful for suppressed shooting and load development. Its low profile design fits under most handguards, which keeps a clean build clean. The block is made from 1144 steel with a black oxide finish, and a brass-tipped set screw locks the adjustment in place.

Key Specifications

• The size is .875 diameter, the diameter this block is made for, so match it to your barrel before ordering.
• The material is 1144 steel, a strong, machinable steel that holds up to the heat and pressure at the gas port.
• The finish is black oxide, a thin, low-glare coating that resists wear and corrosion.
• Mounting uses two set screws, which secure the block to the barrel and are simple to service.
• Gas flow is adjustable, with a locking brass-tipped set screw that holds your setting once you have tuned it.
• The low profile design fits under most handguards, so the block does not force a larger or higher rail.

Frequently Asked Questions

Why would I use an adjustable gas block? An adjustable block lets you tune gas flow for smoother cycling, which is most useful for suppressed shooting and load development.

How does the adjustment stay in place? A locking brass-tipped set screw holds the gas flow setting once you have tuned it.

Will it fit under my handguard? Seekins designed this block with a low profile to fit under most handguards.

Buy the Seekins Precision .875-Inch Low Profile Adjustable Gas Block

A tunable gas system is one of the simplest ways to make a build run smoother, and this block keeps the profile low while you do it. Order it from our Lubbock, Texas shop for fast, secure shipping, and see more AR-15 parts while you are here.