I'm certain that the Gen3 45ACP G21, G21SF, G30, and G30SF can be converted to 10mm either with a drop-in conversion barrel or a complete 10mm upper swap. I'm not sure yet about the Gen4 G21.

 

Buy a 20SF or a 29SF. 10mm rocks.

 

I believe I have read on this Forum that the G30 can be converted with just a conversion barrel, but I have read in the GATE Forum that an entire top end is needed. Since I have the G21 and G36 I would like to convert my G30 to 10mm.

Anyone do this with success?

 

I have both the 5th gen Glock 29 10mm, & Glock 30 .45Auto. With the Glock 29, you can cycle .40S&W without doing anything to your gun. You do not need to switch out barrels or anything. However, to cycle .357Sig from the Glock 29. All you need is the Glock 29 conversion barrel. That's it. So, in my honest opinion. The Glock 29 is almost like getting 3 guns for the price of one.

 

You can convert G21s and G30s to 10mm with just a barrel swap and magazine. HOWEVER, it will almost certainly need a new or modified extractor, and you will likely end up going to a stronger recoil spring. The smaller caliber guns (all other than .45ACP/10mm) can not be converted to 10mm because the magazine well is too short, front to back.

Do yourself a favor and just buy a gun that was DESIGNED for 10mm. Get a G20 or G29. With those you can shoot the following with nothing more than a barrel swap: .40S&W, .357Sig, 9x25Dillon. THEN, you can get a barrel and magazine and shoot 9mm all day long.

Get a G20 or G29, they are basically 5 calibers in one, if you buy the barrels (not that you'll EVER shoot the other calibers, trust me, 10mm is ADDICTIVE!!!). Ten millimeter is a high pressure cartridge and needs a heavier slide than the .45ACP guns have. Although many have converted G21/30s and they are fine, the G20/29 are much stronger guns. Look at the difference in the slides. The 10mm slides are WAY thicker (I mean from underneath, the frame rails are thicker, NOT the outside thickness).

I shoot and reload .45ACP and 10mm. I have a G21SF and G29, and the G29 is BY FAR my favorite Glock. It is the most versatile auto pistol in the world. Especially if you reload. You can use it for bear protection, human protection, hunting, whatever. My shooting buddy also has a G32, and I really like the .357Sig. But it is no 10mm. Don't try to convert TO 10mm, when you can just HAVE a 10mm. Then you can get a barrel to shoot .357Sig, and all the others. You will NEVER regret getting a G29. I understand the allure of a gun that shoots BOTH .45ACP and 10mm, but trust me, you won't do much .45ACP shooting. The 10mm is that good and fun. I barely shoot my G21SF anymore, as I can barely bring myself to reload .45ACP. The 10mm is just so much more fun and exciting.

Another option would be to buy a G29 (or G30) and then buy an entire upper slide assembly for the other caliber. That would basically give you both guns with perfect reliability. You wouldn't have to worry about using a light G30 slide with 10mm or an extractor made for .45ACP. You would just have one frame, and two slides.

 

Another option would be to buy a G29 (or G30) and then buy an entire upper slide assembly for the other caliber. That would basically give you both guns with perfect reliability. You wouldn't have to worry about using a light G30 slide with 10mm or an extractor made for .45ACP. You would just have one frame, and two slides.

This is a great idea. If you don't reload, .45ACP is cheaper off the shelf and more readily available than the 10mm. But then you get to drop that 10mm slide on and load up some howitzers.

 

I say get the 29 then convert that to .40s&w and/or .357sig.

 

I believe I have read on this Forum that the G30 can be converted with just a conversion barrel, but I have read in the GATE Forum that an entire top end is needed. Since I have the G21 and G36 I would like to convert my G30 to 10mm.

Anyone do this with success?

Many people have successfully converted the G30 to 10mm. Read the following thread at Glock Talk in The 10 Ring forum for the latest projects:

Conversion report G30 to 10mm

humphreys19 converted his G30 with just a KKM drop-in conversion barrel and G29 mags. The stock G30 .45 extractor and stock recoil spring in the G30 slide are working for him with zero malfunctions. See his latest update in Post #35 of the thread. He found the stock G30 .45 extractor worked better than a LWD 10mm extractor.

ennis installed a 23-lb recoil spring and modified the G30 .45 extractor per KKM's instructions. The combination works perfectly for 10mm and 45ACP.

 

Many people have successfully converted the G30 to 10mm. Read the following thread at Glock Talk in The 10 Ring forum for the latest projects:

Conversion report G30 to 10mm

humphreys19 converted his G30 with just a KKM drop-in barrel and G29 mags. The stock G30 .45 extractor and stock recoil spring in the G30 slide are working for him with zero malfunctions. See his latest update in Post #35 of the thread. He found the stock G30 .45 extractor worked better than a LWD 10mm extractor. ennis installed a 23-lb recoil spring and modified the G30 .45 extractor per KKM's instructions. The combination works perfectly for 10mm and 45ACP.

The 10 Ring is definitely the place to visit to research this planned conversion. The thread that GRT45 lists is the most recent about that. There are others as well. The only reason I think you should either just get a G29, or get one frame/two slides is carry reliability. If you plan to carry a 10mm (and why not with the amazing ballistics?), I would personally want the superior reliability of the stock G29.

I spend most of my time in the 10mm forums, and there are people (like the one GRT45 points out) that have no issues, but I've read about several that have had issues getting the extractor just right. They seem to go back and forth between a stock G30 extractor, a modified G30 extractor, an aftermarket one, and a modified aftermarket piece. Personally, I'd just want a rock solid gun.

You know, I've always planned on getting a G20 and G30, but now I'm thinking about my own advice. I just need to find me a G20 and G30 slide!!! I've already got the G21SF and G29 frames. Hell yeah!!! New pistols on the cheap!!!

 

Yes, I have done this conversion on a G30, KKM .45-10mm barrel, G29 mags, and no other changes. Tried a 10mm extractor from Lone Wolf, had some extraction and ejection problems. Went back to the stock .45 extractor, and have had perfect operation since.
Now I am not trying to work up to some of the nuclear class loads some of the guys are, but I am getting very good performance and accuracy from factory 10mm and mid- to upper range handloads as published in the manuals. If I want to go hotter and heavier than that, I own a .44 Magnum.
I will report if the conversion starts to give me problems, but as of now, I am pleased with it, and it is part of my carry rotation. I can not give a higher recommendation than to say "I would carry this", and I do.

Tom

 

Thanks all for the info. Now to decide if I want just the barrel and mags or the complete top end. I have some pricing to do now!

 

Complete OEM upper should be about $350 to $385, Try Glockmeister or Gunbroker.

 

Buy a 20SF or a 29SF. 10mm rocks.

^^this right here^^

 

Did some research on pricing for 45acp to 10mm on the G30. KKM barrel and two G29 mags = $215. Complete upper plus two mags = $410. All of this is plus shipping. G29 bought online $547 plus FFL and Shipping. Or I could trade/sell my G30 in on a G29.

Something to think about (which is part of the fun of collecting Glocks).:embarassed:

 

I'm wishing for a 10mm barrel for the 36 and perhaps a stiffer recoil spring.

 

I'm wishing for a 10mm barrel for the 36 and perhaps a stiffer recoil spring.

If it hasn't been offered by now for the G36, it likely never will be. I suspect vendors don't offer 10mm conversion barrels for the G36 because of engineering limitations of the G36 design (size and weight of slide) and the absence of compatible 10mm mags. I believe a complete G29 10mm upper will function on a G36 frame, but the issue of functional 10mm mags for the G36 remains.

The G29 10mm and G30 45ACP are based on the same frame design and the weight of the slides are essentially the same (See GT thread "G30 vs G29 slide weight" for measurements). The weight and dimensions of the G30 slide make it suitable for 10mm, .45 Super, .400 CorBon, and .40 Super.

 

Complete OEM upper should be about $350 to $385, Try Glockmeister or Gunbroker.

If you want a .45 and 10mm this is the way to go. Even on the
cheaper conversion, by the time you buy all the parts, you will be more than
half way to the price of a complete upper.
Buy a G21 or G30, then a complete new upper, or get the G20 or G29, and
then a complete G21 or G30 upper.
The 20 and 21, and the 29 and 30, use the exact same lower frame, so all
you need to do is change the upper, change to the correct mag. and
your ready.