Magpul STR Carbine Stock (Mil Spec) - FDE Pistol Hop-Up Rubbers Lens caps keep all lenses

Lens caps keep all lenses protected when not in use (remove when in use)

520rd BB capacity

Tube diameter 25

so any standard M4 AEG magazine can be used

Perfect for installation onto the scope rail of an M4A1 AEG

Magpul STR Carbine Stock (Mil Spec) - FDE Pistol Hop-Up Rubbers Lens caps keep all lensesThe Magpul STR (Storage Type Restricted) Carbine Stock Mil Spec is a drop in replacement buttstock for AR15 M4 carbines using Mil Spec sized receiver extension tubes. A storage capable version of the CTR, the STR has improved cheek weld and two water resistant battery tubes on a compact, reinforced polymer A frame design. A shielded operation lever and supplemental friction locking system prevent accidental operation and minimize excessive stock