1 in 16" Twist 6" Length Stainless Steel Machined from aircraft grade 416 stainless steel forgings and heat-treated to R/C 40 for maximum service life. Critical tolerances are held to less than .0005" to provide phenomenal accuracy (test barrels at the Wilson factory routinely shoot groups of 1/2" at 25 yards). Barrels are slightly oversized in the lock-up areas and require fitting by qualified gunsmith.
 
 Fits the following with long slide or with 6" barrels: Colt Government Model Enhanced Government Model Wilson 1996A2 Springfield Armory 1911 A1 Military 1911/1911 A1 Auto Ordnance 1911 A1 Norinco 1911 A1 & Caspian 1911 A1 Safari Arms Matchmaker Detonics Scoremaster Caspian Hi-Cap (Frame Kit Only) Strayer-Tripp-Voigt 2011(Frame Kit Only) Para-Ordnance P-14(Frame Kit Only) Colt Gold Cup AMT Hardballer Colt Double Eagle