g21 10mm?

[Wingshooter]

Will a G21 with a 10mm barrel and mags be as reliable as a G20?

I found a good deal on a used G21sf. I can do that and a 10mm conversion bbl cheaper than any G20 I've found. If reliablity will suffer though, then I'll just spend more on a gen4 G20.

[Patton]

Well, I think Lone Wolf discontinued there G21 45-10 conversion barrels. Otherwise Glock conversions are normally very reliable. You can use a factory or aftermarket conversion barrel that is 10mm though. Unlike the smaller calibers the 45 and 10mm barrel OD are the same. Only the tab or tail is smaller on the 10. Remember if it was a revolver it wouldn't even have the quivalent of the tab. Most people shoot with aftermarket 10mm barrels with no problem. How good of a deal did you find? You can get a used 21 at GT's for less than $350.

[Wingshooter]

Thanks, Patton. Great info.

Midway has the Storm Lake conversion. GT's is where I was looking for the pistol :) I like the idea of being able to go .45 or 10mm

Do you think I would need to change the extractor or recoil spring while running 10mm in the G21? Edited September 8, 2015 by Wingshooter

[Patton]

I didn't mention the SL because of the cost but if you want to be able to shoot both it may make it worthwhile. Understand they will sometimes require a little fitting as well. If I recall the factory recoil spring is probably the same for 21 vs 20, but for Nuclear 10mm loads you will need a heavier recoil spring. If you wanted to change the extractor it may increase reliability but it is not often needed. Edited September 8, 2015 by Patton