Lot 18 – Model 1911/A1 .45 ACP squeezebore barrel only. If you have a .45 ACP squeezebore cartridge, you may have wondered what .45 ACP pistol they were fired in. This is an extended-length (6.2 inches; 1.1 inches longer than standard) M1911/A1 barrel in new condition. It has no markings except the “P” and “HS” (High Standard) on the link section. The first part of the bore is rifled, then the smooth bore section reduces its diameter to .38 (0.3540 inch). Extremely rare M1911A1 accessory. Ex-Woodin collection. $375-450