ZYTEL Dupont technopolymer material.
High efficiency steel compression spring.
Internal slide and shot guide redesigned to avoid jams.
Anti-slip orange peel surface.
Flat front to better align with the metal body.
Orange dot with remaining BB'S monitoring window.
Rubberized lower plate with shockproof rubber.
For AEG M4 series electric guns.
N.B. Loading from new can be tough, over time it will get better and better.