CMMGA(R) MK10 BANSHEE(TM) 10MM ACP SEMI-AUTO PISTOL If 10mm is the best millimeter for you, stop your search here. With an 8" barrel this Mk10(TM) BANSHEE(TM) is built to extract the full ballistic performance expected of the 10mm cartridge. Glock-pattern magazines have come to be known for their reliability and affordability, and if you already have your own collection of 10mm Glock-pattern magazines going then they will be right at home with the Mk10. Comes with 3.4 oz bolt weight pre installed. The BANSHEE series represents the most innovative AR pistols available today. From the quick deploying RIPBRACEA(R), to the stylized receivers and Mfg: Cmmg