Double Diamond Standard Replacement Barrel

Just converted my Glock 27 to a 9mm with a Double Diamond barrel. I was very surprised how much tighter my groups were with the new barrel. I used Sig Elite V Crown 124 grain hollow point, Winchester PDX 9mm plus P, and Sig VCrown full metal jacket and Mag tech 124 grain hardball. About 200 rounds of flawless accuracy. I think I found the right barrel from the start. I shot from 7 to 15 yards.

I got a black G17 replacement barrel. The accuracy improved 100% and it was a simple drop-in replacement. Cannot say enough about this product. EXCELLENT!!!

I purchased 2 9 mm DD barrels in black recently (couple months ago) and I will give 4 stars but not 5. I installed one barrel in a factory slide and within the first 10 rounds I have obvious wear points on the outside of the chamber, along the edges, shiny spots where the black was scrapped off. Feels like the square corners are sharper than factory barrels. The groups are tight but not impressed with the finish work. Never had this on the 3 factory barrels I have.

I bought a threaded barrel first and absolutely love it, but with the threaded barrel it would not fit in my favorite holster, so I bought one of these also as mentioned before the tolerance are tight so the best way to drop your barrel in put spring in then turn the gun upside down magazine well pointed to the ceiling then put slide on. When I review the threaded barrel I had only fired about 25 rounds thru it. I have now put hundred of rounds thru both barrels not a single malfunction you can spend hundreds more on custom barrels but you don’t need to. These are simple fantastic barrels and for those of you that reload these unlike Glock barrels are fully supported so much less resizing Glock fired ammo, honestly I simply didn’t bother to reload Glock fired ammo before I got these barrels. I primarily shoot 45 but I am getting one for all my glocks, Just waiting on the sales. Lenny please hurry on the sales for these barrels I got 4 more to buy!!

Dropped right in. Works great and looks great.

Installed this in my Glock 17. Very snug fit, takes out all the loose noise when racking. Looks great in stainless, makes the Glock look better quality wise. I was worried as you read reviews of how aftermarket barrels have tighter tolerances, and will jam with cheap ammo. Ammo is hard to get right now, and I shoot apx 90 rounds of target reloads a week. I have had no function issues with the first 100 rounds so far. This barrel will not turn you into Clint Eastwood unfortunately , but I can see my groups are a bit smaller at 7 yards. I'm so happy with this barrel, I have one on back order already for my Glock 43X. You won't be disappointed on looks alone, besides it might shrink your grouping just a bit.

I just tested this barrel the past two days and have now made it my standard barrel. I am getting groups at 25 yards with my carry ammo from 1.73" to 2.35". My stock barrel was typically around a 3" group. I tested three different loads and all had improved accuracy. I also saw velocity increased by 3.5% to 5.5%.

Product description says 'standard', well it is far above a standard replacement item! The stainless finish and tooling are flawless. Perfect fit, smooth cycling, and feeding of the next round. The barrel seems to be a bit heavier than factory and gives more forward dead weight reducing muzzle flip a bit. A true Glock Store Performance product! My Glock 27 is finally complete! I will be replacing the factory barrels in all my other Glocks real soon with this barrel.