Zaffiri Precision Pistol Barrel, 9MM, 4.02, Nitride Finish, Black, For Glock 19 Gen 1-4 ZP19BBN Zaffiri Precision match grade barrels for Glock 19 Gen 1-4. High quality performance you demand with an easy drop-in barrel upgrade. This replacement barrel is precision manufactured in the USA to the highest standards providing exceptional accuracy. Conventional rifling with a polished chamber and bore to perform well with lead" plated" and jacketed bullets. This barrel is ready-to-use and is a perfect replacement for your existing Glock barrel.