Glock 19 OEM threaded barrel with thread protector (YHM). Barrel is threaded 13.5x1 LH. I purchased the barrel to use as a suppressor host but have decided to go another direction. Only about <100 rounds through it. Price includes shipping. Paypal FF or add 4%. No trades. I have lots of feedback in other forums if you have any questions. Please email me for the fastest response.