Carbine Gas Piston System With Adams Arms 1 piece bolt carrier, Plastic handguards and handguard cap.

The Adams Arms Gas Piston System is an end user installed after-market product for Mil-Spec AR's.  It will fit on any AR barrel with a .750" or 3/4" diameter at the shoulder where the front sight base sits. The Rifle version will work on barrel lengths from 14"-18" that has an existing rifle gas system.

We recommend Midwest Industries or Daniel Defense Free Float Handguards for Best Operation.

We will install for you for a nominal fee.
 

Feel free to ask all the question you have. We take the time to answer them all!