***Bar-Sto Barrels are semi drop-in. Your barrel may not drop directly into your slide without proper fitting from a gunsmith.***
The barrels are machined, bored, and rifled completely in their own shop. Accuracy is excellent even when compared to target grade barrels. You will feel the difference in quality just by holding this barrel in your hand compared to the Sig Sauer factory barrel.
Not available for export outside the United States.
Double Diamond 10mm to .40 S&W Conversion Barrels
Double Diamond Sig P320 Standard Replacement Barrels
Killer Innovations Brake for Glock
Double Diamond 6" Barrel for .40cal, .45ACP, or 10mm Glocks
Double Diamond Threaded Barrel
Double Diamond .40cal to 9mm Conversion Barrels for Glock 












Hank –
I purchased the Bar Sto match barrel for the fullsize P320 and even with crap ammo it grouped under 6” at 25 yards