CZ USA P-O9 C NOCTURNE SR 9MM LUGER SEMI-AUTO HANDGUN "Concealed carry with a whisper" is a fitting description for the CZ P-09 C NOCTURNE SR (Suppressor-Ready). Its reduced dimensions are complimented by a 1/2" A- 28 UNEF - 3A threaded barrel for fast and convenient mounting of a suppressor. FEATURES Hammer Fired Mechanism: DA/SA operation, SA 4.7 lbs DA 9.9A 0.5 lbs Modularity: User-swappable safety and decocking levers Material: Durable, fiberglass-reinforced polymer frame Thread: 1/2"x28 Mfg: Cz Usa