Compatible with almost all AEG M4s and cross-compatible with all KWA M4 AEGs Unique textured front and rear grip for improved handling Dot matrix ID panel for personalization and loss identification Wider follower to reduce wasted BBs and double feeding Cutoff feature gives a more realistic shooting experience (only works with KWA VM4 or RM4 AEG) Adjustable BB capacity from a realistic 30 rounds to 120 rounds In the Box 1X Rifle Magazine Specifications: Brand KWABuild Ultra-durable Fiber PolymerMagazine Capacity Adjustable 30rd / 120rd (Low/Mid-Cap)Length 7.5Height 3.5Weight 1.5 lbsColor Black California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov