Glock 21 Barrel Swap - Retired with Gen 3 Model 32 .357 sig. military service. He killed on both ends, ordering the 9mm Double Diamond conversion barrel and downgrading it to 9mm.
The gun works fast and the teeth were pulled from that old monster .357 sig not to mention the dirt free 9mm ammo.
Glock 21 Barrel Swap
One worked tirelessly until the devil sold him. Another man ordered. This barrel is perfect for converting my 22 40 cal model to a 17 9mm model without any other modifications. Great precision. Or I wouldn't get another.
Wilson Combat Match Grade Barrel Glock 21 45 Acp 1 16 Twist 4.6 Ss
Installed SKU: 1012-STS-A27 9mm Conversion Barrel on my S&W Glock 22 .40 caliber. Almost 500 rounds without a single misfire. It surprised the 9mm shot at the same point of aim as the .40 caliber. The average group at 7 yards is 3/4 inch.
I ordered the stainless steel version for my G23 and it ran out of a box. Straightforward upgrade, no hassle. I put oil in the factory recommended places and ran 100 rounds right away. There is no problem. die well. I already had the Black Yikes connector and 6lb trigger return spring installed and man, it's a lot of fun to shoot.
I took out the old barrel, slid in the new one and fired a 9mm, simple as that. I had a jam after firing the 19 shot trying to throw up. Maybe a break in time? Haven't had any problems as 150 rounds have now been removed from it.
It catches on the slide release when you install it, but if you hold it down a bit, the barrel clears and the slide slides on without any problem.
Glock 21 Gen 4 W/10mm Barrel
I just bought the DD barrel and put it on the glock G 23 .40 s&w and bought the glock 9mm g19 mag.
There are no other modifications. Yook to the range and fired 50 rounds of S&B 115 1st 124gr ammo. NO FTF or FTE or pipes or stove jambs. Works perfectly, very happy with this 40 to 9mm conversion.
We inspected the barrel prior to installation and it was beautifully finished. there were no nicks, scratches or dents and the feed ramp was excellent, very smooth to feed. I love being able to shoot .40 and 9mm from the same g23. This gen 4 G23 has been perfect when it was nes.
Also less muzzle rise as the slide for the .40 g23 is taller than the 9mm g19 slide. Works great on my Glock 41 with the stock trigger. I'm too old to compare accuracy between different Glock barrels, but this one is fine.
Best Aftermarket Glock Barrels [hands On]
I appreciate the date counter on the website. It sets the standard for all other online businesses. I had a little trouble getting my order to me, but the customer service was fantastic and got me through it. The barrel itself seemed to be made like the other barrels that used to be on the market. A bit of tolerance created initial nutritional problems. I did some research and found that Glock 29 barrels have a shallower angle on the feed ramp that extends slightly into the breech. There is also much more bezel around the chamber door on the oem barrel than on the double diamond barrel. So I took a risk and little by little I was polishing the entrance of the room and the feeding ramp. I now have no feeding issues and have successfully converted a 10mm Glock 30. I recommend you get a 23lb tungsten recoil spring because recoil for a 10mm kind of sucks on a mini Glock.
A perfect fit for my G 21 Gen 4. All I had to do was buy the G20 magazines and I was ready to shoot. No other parts needed to be changed. There are no problems with the action. Accuracy was at least as good as with a 45 ACP gun. I think it shot more accurately, but I haven't compared targets yet. The main problem I was concerned about was function and recall. The recoil spring seemed to be normal enough with the various ammunition I tried. I ordered and was waiting for a back order to arrive. It was about a 3 week wait until the keg was in my mailbox. The barrel appeared to be of very high quality. Very happy with my purchase.
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