The Backup Tactical® Threaded Barrel for Glock® 43 / 43X Pistols is a SAAMI Spec barrel with pulled-broach rifling and a 1:16" twist rate for superior accuracy. Durable AISI 416 stainless steel construction and a corrosion-resistant finish ensure long-lasting strength and durability. This barrel features a standard 1/2x28 thread pitch for compatibility with your favorite muzzle devices such as compensators and suppressors. Backed by a lifetime warranty. Thread protector included. Made in USA.