Inventorytyp : Reg Vendor Group : Glk Product Description Description: Glock 21 Threaded Barrel M16x1 left hand threaded barrel. Additional Information: Glock 21 .45 Auto M16x1 Left Hand Threaded Barrel Manufacturer: Glock Item#: ACU-4580G In Stock $198.99 Quantity Prices for internet orders only. Not all products available in store. Overall Customer Rating:  Rate This Item   |  Write a Review Related Items Threaded Barrel Factory Sig 220 .45 ACP .578-28 TPI $261.99 Encore Barrel .45 Colt/410 Gauge 15 Inch Vent Rib Blue Finish $338.99 P22 Conversion Unit .22 Long Rifle Converts 5 Inch Model to 3.4 $118.99 Interchangeable Stainless Steel Barrel For Bond Arms 9mm $137.99 USP Compact 45 Threaded Barrel .45ACP 4.46 Inch Barrel 16X1-LH T $276.99 Contender Barrel .45 Colt/410 Gauge 14 Inch Vent Rib Blue Finish $320.99