convertion question

[r73toy]

i was asked if a glock21 be converted into a 10mm? i didnt not know what to tell them .. and if so what would need to be done ? thanks

[Slab]

check lone wolf and see if they make a barrel for it. im pretty sure

[Desertscout]

i was asked if a glock21 be converted into a 10mm? i didnt not know what to tell them .. and if so what would need to be done ? thanks
Yes, it can but not with a stock barrel. There are conversion barrels out there. KKM makes a damn fine one.

[RayB]

As Desertscout says, a 3rd Gen G21 with LCI extractor can be converted to 10 mm with a .45 ACP : 10 mm Conversion Barrel and Glock 10 mm magazines.

A caliber conversion barrel combines the outside dimensions of the original caliber with the inside dimensions of the substitute caliber, so the firing chamber lines up with the breach face, and the barrel fits the frame and slide. If the two calibers are close in size, this works quite well with drop-in parts.

Dan at Lone Wolf hooked me up with everything...

The original OEM guide rod worked, but I opted (see attached) for a stainless steel guide rod and 22 lb. spring to offset the G21's slightly lighter slide, and the fact that I prefer the hotter loads (otherwise, what's the point?).

I found that the steeper feed ramp of the .45 : 10 conversion barrel caused feeding problems with the square-nosed bullet types. Bulbous-nosed bullet types like CCI Blazer, Winchester Silvertip, and Double Tap's sizzling 135 grain Nosler (my favorite!) feed just fine.

I don't shoot a whole lot of the 10 mm, due to the expense, but I've put over 2000 rounds through this rig. I do keep 500 Double Taps on hand, just in case the urge overwhelms me! With the right ammo, 10 mm offers true .357 magnum power in a sixteen shot autoloader!

10 mm is a UFO in my country, so finding a used G20 or G29 wasn't in the cards. This approach came in at about 1/2 the cost of a new G20, with four magazines, guide rod, spring, conversion barrel, and all taxes and fees included.

--Ray