The Mongoose offers customers a lightweight low-recoil pistol-caliber carbine for competition home defense and plinking. - Barrel Length: 5.8 in - Overall Length: 13.67 in - Weight: 3.6 lb - Action Short recoil operating system - Frame PCC - Barrel Length 5.8 in - Firearm Overall Length 13.67 in 23.38 in (with extended brace) - Firearm Weight 3.6 lb 4.26 lb (with brace) - Barrel NEMO 5.8 steel barrel; 1:10 twist; threaded 1/2 x 28; QPQ nitrided ships with barrel thread protecter - Receivers NEMO extruded aluminum upper receiver and billet lower receiver - Handguard / Forearm Integral 10.25 top picatinny rail two M-LOK slots at 3 and 9 o'clock one M-LOK slot at 6 o'clock - Sling Attachment Rear back plate with picatinny rail for sling stock and accessory mounting - Bolt Lightweight short-recoil bolt - Trigger ALG ACT Trigger - Charging Handle Non-reciprocating forward charging handle with either left/right hand side compatibility - Muzzle Ships with two end caps: Flat End Cap for suppressed use Compensator End Cap for non-suppressed use - Safety Ambidextrous safety selector - Buffer Assembly Bolt-captured recoil spring and guide rod with additional secondary buffer spring/plunger - Brace SB Tactical FS1913 brace - Grip MAGPUL MOE SL grip - Magazine MAGPUL 35-round PMAG 35 EV9 - Additional Features Ambi bolt catch/release with last round bolt hold open. Ambi magazine release. Easy AR-style two pin disassembly. Easy takedown lever to field strip bolt and barrel. Bolt actuated ejector. - Compatible with (ammo) 9MM LUGER 9