Arcturus AR MOD1 M4/M16 30/130rd Variable-Cap Windowed EMM Magazine Grey "AS VAL" Comes with semi and full-auto

Comes with semi and full-auto select fire

Receiver: Steel

Internal 900 round magazine (found underneath the feed tray cover) allows you to lay down fire

but don’t need to buy all the accessories

Arcturus AR MOD1 M4/M16 30/130rd Variable-Cap Windowed EMM Magazine Grey "AS VAL" Comes with semi and full-autoENHANCED CONSTRUCTION One Piece Reinforced Magazine Shell MODULAR INTERNAL Easy Disassembly for Cleaning & Maintenance MODULAR SHELL Quick Replacement for Optional Shells VARIOUS CAPACITY Switchable Mid Real Capacity Or High Capacity LENGTHENED FOLLOWER Snag Free & Reduce BB Waste IMPACT ABSORBING DESIGN For Outstanding Reliability REINFORCED MATERIAL For Long Lasting Durability SPECIFICATION Compatible: M4 M16 Construction: Polymer Capacity: 30 Round