Posted: 2/5/2007 10:20:26 AM EDT
| I cant find the link to the interchangable parts again but my ? is can you swap 20 and 21 uppers or just barrels and of course mags and swap from 10mm to 45? I would also like the link again to save this time thanks. |
| I don't have the link you request, but I do own G21s and a G20. The G20 and G21 lowers are the same. You can swap the uppers back-and-forth. There are some folks who are pushing 10mm conversion barrels for G21s, but there have been several reports of extraction problems. |