Adams Arms has developed a new lightweight piston upper. Mounting one to most common lower assemblies yields a piston driven rifle that weighs in right around 5.5 lbs. It’ll be available in both a mid-length and carbine length version. Here’s a first look at a prototype and stay tuned for an upcoming review once we get some time at the range.

Features:

- Adams Arms proven reliable piston system with Melonited one piece bolt carrier.
- 1:7 twist barrel Melonited inside and out with a lightweight profile and Adams Arms own compensator.
- Samson Evolution Series rail system.