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My Account | Cart Contents | Checkout   Home > Shop > BARRELS > HANDGUN > ACU-4580G Inventorytyp : Reg Vendor Group : Glk Product Description Description: Glock 21 Threaded Barrel Glock 21 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 The inventory shown here is not our store inventory. Please call or email if you want to see if we have something at the store. Thanks!!! Overall Customer Rating:  Rate This Item   |  Write a Review Related Items Encore Barrel .460 Smith & Wesson 15 Inch Stainless Steel Finish With Sights $280.99 Encore Barrel .243 Winchester 15 Inch Blue Finish With Sights $245.99 Threaded Barrel Factory Sig 228/229 9mm M13.5x1 Left Hand TPI $261.99 Encore Barrel .460 Smith & Wesson 15 Inch Blue Finish With Sights $245.99 Contender G2 Barrel .17 HMR 14 Inch Blue Finish Adjustable Sights $252.99 Contender G2 Barrel .223 Remington 14 Inch Blue Finish Adjustable Sights $240.99