Lone Wolf Distributors AlphaWolf Barrel, 9MM, Salt Bath Nitride Coated, Threaded/Fluted, 416R Stainless Steel, Conversion to 9mm Stock Length, Fits Glock 22/31 Gen 1-4, Includes Thread Protector, Made in the USA AW-229TH

Alpha Wolf barrels establish the benchmark for absolute accuracy and combat reliability. It is the pinnacle of what every other barrel manufacturer strives to be. Exact tolerances allow for a drop in installation. Designed for lead, plated, or jacketed ammunition. Converts .40 S&W and  .357 Sig to 9mm. Heat treated to RC 40-42, then Salt Bath Nitride coated.