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.
 
Length 5.03 inch, 128 mm , also converts M31 to 40S&W

Barrel Features:
PROUDLY MADE IN THE USA!
Fits Glock generations 1-4
Designed for lead, plated, or jacketed ammunition
Certified, stress relieved 416 stainless steel
Button rifled, three stage honed bore
Industry recognized SBN premium coating (SBN is Salt Bath Nitride, similar to Tennifer)
Heat treated to RC 40-42, then SBN coating increases surface hardness to RC 60
Exacting tolerances allow for drop in installation
Fluting creates path for heat and debris to escape
Threaded models come with appropriate thread protector installed