G&P M4/M16 340rd Ball Ball Hi-Cap AEG Magazine (10pcs Set, Black) Rail System APM50 is also a bolt-action

APM50 is also a bolt-action gun but power source is coming from Co2 stored in the cartridge

Even the 25rds Magazine is completely finished in tactical black

This gun also comes with stylish U Mag

Magazine Capacity : 16+1 rds

Superior performance with HFC 134a Gas and Crispy Blow Back with HFC 22 Gas

G&P M4/M16 340rd Ball Ball Hi-Cap AEG Magazine (10pcs Set, Black) Rail System APM50 is also a bolt-actionG&P M4 M16 340rd Ball Ball Hi Cap AEG Magazine (10pcs Set, Black) Ball Ball Series Magazine Made of Polymer Fiber Housing Open trap door and fill reservoir with high quality BBs. Suitable for M4 M16 Series Airsoft Electric Gun AEG Rifle 340 Rounds Loading Capacity Engraved detail marking on body like the real Rifle Magazine (Ball Ball Texture and Skull frog Marking) Large thumb dial on bottom of magazine allow you to wind up the compression spring 10