Lone Wolf AlphaWolf drop-in replacement barrel for the Glock 23 in .40 S&W, stock 4.02" length. Machined from certified, stress-relieved 416 stainless steel and finished in salt bath nitride (SBN) for a hard, black, corrosion-resistant surface. Made in the USA. Features Certified, stress-relieved 416 stainless steel, heat treated to RC 40-42 Salt bath nitride (SBN) finish raises surface hardness to about RC 60 Button rifled with a three-stage honed bore Standard groove-and-land rifling - safe with lead, plated or jacketed bullets, unlike a factory polygonal barrel Fluted exterior Drop-in fit - no gunsmithing required Also converts a Glock 32 (.357 SIG) to .40 S&W Manufacturer Part Number: AW-2340N Specifications Caliber: .40 S&W Compatible host: Glock 23 Gen 1-4 (not Gen 5) Barrel length: 4.02" (102 mm) Material: 416 stainless steel, salt bath nitride finish Rifling: button rifled, standard groove and land Manufacturer: Lone Wolf Distribution Because of the nitride finish, AlphaWolf barrels cannot be custom chambered or re-crowned. GLOCK is a federally registered trademark of Glock, Inc. and is one of many trademarks owned by Glock, Inc. or Glock Ges.m.b.H. Neither 3CR Tactical nor this site are affiliated in any manner with, or otherwise endorsed by, Glock, Inc. or Glock Ges.m.b.H. The use of "Glock" on this page is merely to advertise the sale of Glock pistols, parts, or components. For genuine Glock, Inc. and Glock Ges.m.b.H products, visit https://us.glock.com . 3CR Tactical is an approved Lone Wolf Distribution dealer. Lone Wolf parts we list are genuine Lone Wolf product, not clones or salvage.