Faxon Firearms Match Series Barrel Features The Faxon Firearms Match Series barrel is machined entirely in-house from 416-R stainless steel that has been stress-relieved to hold its dimensions under repeated firing then finished in a black Nitride coating that boosts surface hardness and corrosion resistance. The button-rifled bore uses a 1:10 twist and conventional lands and grooves which widens ammunition compatibility to include cast lead loads that some polygonal factory barrels cannot handle well. Fluting along the barrel reduces weight while the 1/2x28 threaded muzzle fitted with a thread protector accepts standard compensators and suppressors. The 9mm chambering and 4.5 length match Glock 19/45 Gen2-5 slide dimensions precisely. Because the barrel is held to better-than-factory tolerances it delivers a tighter case-to-chamber lockup than the stock Glock barrel translating directly into tighter groups at the range. Installation is a straightforward drop-in swap into any factory-spec Glock 19 Gen2-5 slide with no fitting or gunsmithing required. The barrel ships with no sights since it is intended purely as a performance upgrade behind the factory or an aftermarket sight setup already installed on the slide. For shooters running a threaded barrel setup for training or suppressor use this Match Series barrel is a direct reliable upgrade path for their Glock. Faxon Firearms Match Series Specifications Brand: Faxon Firearms Model: Match Series Caliber: 9mm Luger Compatible Hosts: Glock 19 Gen2-5 Glock 45 Barrel Length: 4.5 Barrel Material: 416-R Stainless Steel Barrel Finish: Black Nitride Barrel Type: Button Rifled Twist Rate: 1:10 Barrel Description: Fluted Threaded Thread Pattern: 1/2x28 Muzzle: Thread Protector Available At: GrabAGun