This is a Lone Wolf Distributors Barrel known as the AlphaWolf chambered in 9MM, model AW-239TH.
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. Designed for lead" plated" or jacketed ammunition. Button rifled" three stage honed bore.
Fits all G23/32 generations
Made of 416 stainless steel
Drop in installation
Salt bath nitride coating, Made in the USA