Inception Designs Roller Sear Airsoft Barrel Accessories Stronger Battery Harness: The heavy

Stronger Battery Harness: The heavy duty battery harness is not only stronger

Rear harness straps to secure smaller loads

Included Power-On button (no more allen keys

Hop up adjustment comes from the top to get pressure directly centered

The M4 RIS EC1 Nylon Fiber is Classic Army's entry level carbine

Inception Designs Roller Sear Airsoft Barrel Accessories Stronger Battery Harness: The heavyThis is a roller sear. It utlizes the largest bearing possible for the smoothest rolling action on the trigger plate. This works in all of our Inception frames, Empire frames and many old school frames, but we haven't verified it in all old school frames (there are just too many) so please be aware that it's use may depend on the frame you are putting it in. It will fit in any frame with a sear slot that is 0. 1875" or wider. Includes: Roller Sear