Threaded For Compensator, With Conventional Rifling & Fully Supported Chamber
Match-grade barrel has a threaded muzzle to enable mounting of a compensator or suppressor. Machined from a 416 stainless forging to tighter-than-factory tolerances for drop-in fit and improved lockup, with conventional land-and-groove rifling for excellent potential accuracy with both lead and jacketed ammunition. The improved feed ramp design ensures proper feeding with a wide variety of bullet types and provides maximum chamber support. Thread protectors sold separately.
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Big Book Catalog, Issue:69, Page:210
SPECS: 416 stainless steel, non-reflective black oxide finish. Fits all generations of the Glock models listed below, including Gen 4. Muzzle thread patterns: Model 17/19 – ½"-28 tpi. Length: 4.575" w/protector on & 4.555" w/ protector off; Model 21 - .578"-28 tpi; Model 22 – 9⁄16"-24 tpi. Thread Protectors – 303 stainless steel, knurled, black oxide finish. Threaded ½ X 28.