I own both a G41 and G21. The G41 fits in all my G34 holsters and it is just a fun gun to shoot. With that being said the G21 has less recoil. I am using my G41 in USPSA because I have some extra 45 ACP ammo and it is as I said fun to shoot. You can't use it in Heavy Metal just the G21, 30, 20, 29 or 37. The 21 will have more versatility in that area but so would a Glock 30. So other than the additional recoil issue (which isn't bad) I would buy it.