Arcturus AR MOD1 M4/M16 30/130rd Variable-Cap Windowed EMM Magazine Grey M16  Cylinder Material: Stainless Steel

 Cylinder Material: Stainless Steel

the first of its kind with a FN licence engraving

(Not recommended for use with Polarstar Fusion Engines)

Tired of all the high-spec functions that you're unlikely to need

Adjustable magwell

Arcturus AR MOD1 M4/M16 30/130rd Variable-Cap Windowed EMM Magazine Grey M16  Cylinder Material: Stainless SteelENHANCED 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