Prometheus Wide Use Rotary Style Hop-up Chamber for M4 AEG

This Prometheus chamber provides consistent and reliable results without any fancy gimmicks. The rotary dial provides a wide range of hop adjustment with a long window for a wide array of nubs. The c-clip locks down the barrel to eliminate any torsion or vibration. This has been our go-to hop-up unit over the years due to its performance, reliability, consistency, and ease of use. Great for ER-hops, R-hops, flat hops, Maple Leaf buckings, standard buckings, and more.  Features: Rotary style wheel for hop adjustment Cast metal alloy body Rigid c-clip Easy to install / adjust Wide compatibility  *Inner barrel not included.