Sig Sauer 8900447 716I Tread 3-Chamber Compensator Black 5/8" 24 tpi Threads for 7.62mm Thread Pattern $72.50
Sig Sauer KIT365RECOILSPRING P365 Recoil Spring Assembly 9mm Luger Sig P365 Compatible w/ 3.1" Barrel Black Handgun $36.25
Sig Sauer CALXMPX4B9G2 MPX Caliber Exchange Kit 9mm Luger 4.50" Black Nitride Carbon Steel Barrel with Flash Hider for Sig MPX Gen II $798.75