Featuring an aggressive target crown. Titanium nitride (TiN) plated for increased wear resistance. CNC Machined on state of the art equipment. Compatible with 3rd & 4th Glock 20 slides Tighter barrel lock up. Manufactured from premium U.S. made 416R stainless steel bar-stock. Broach cut rifled in 1:16 twist for improved accuracy. Fully supported and polished chamber and feed ramp. Mfg: Alpha Shooting Sports