Arcturus AR MOD1 M4/M16 30/130rd Variable-Cap Windowed EMM Magazine Tan Primary Airsoft The GC16 offers an entirely

The GC16 offers an entirely redesigned full metal receiver

Not at all

This updated KWA AEG3 RM4 SR10 also features a mechanical/electrical cut-off system to stop firing when the magazine is empty at 30 or 120 rd

Also mounted the removable CNC Brass Side Wings to slide smoothly into the outer barrel slots

Arcturus AR MOD1 M4/M16 30/130rd Variable-Cap Windowed EMM Magazine Tan Primary Airsoft The GC16 offers an entirelyENHANCED 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