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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 $194.99 Quantity Prices for internet orders only. Not all products available in store. Overall Customer Rating:  Rate This Item   |  Write a Review Related Items P22 Conversion Unit .22 Long Rifle Converts 3.4 Inch Target Mode $165.99 Encore Barrel .500 Smith & Wesson 15 Inch Stainless Steel Finish $386.99 Contender G2 Barrel .357 Remington Magnum 12 Inch Blue Finish Ad $327.99 Encore Barrel .45 Colt/410 Gauge 15 Inch Vent Rib Blue Finish $394.99 Contender G2 Barrel .44 Remington Magnum 14 Inch Blue Finish Adj $311.99 Encore Barrel .243 Winchester 15 Inch Blue Finish With Sights $318.99