Arcturus M4/M16 MOD1 30/130 round EMM variable mid cap magazine

ARCTURUS AR MOD1 M4/M16 30/130Rds Variable-Cap Windowed EMM Magazine BLK Enhanced 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: Snap-free & Optimized Feeding up to Last BB Impact-Absorbing Design: For Outstanding Reliability Reinforced Material: For Long-lasting Durability