I have frequently used full sized magazines in compact or subcompact guns without a grip adapter. I've used these in Wake Action matches with no issues and often carry a larger mag as a backup.
Here are some that I have used with no issues.
VP9SK with VP/P30 Mags
SW 6946 with 5943 mag or even a mec-gar 20 rounder
SW CS9 with 3953 mags
Glock 26 with G19 or G17 mags
P320 compact with P320 mags
SW M&P9C with M&P9 mags
My pinky usually just falls into the space and it handles fine for me. It's "ugly" but effective.
Please school my on why you "need" a sleeve.
Does anyone think you can actually damage something?
Here are some that I have used with no issues.
VP9SK with VP/P30 Mags
SW 6946 with 5943 mag or even a mec-gar 20 rounder
SW CS9 with 3953 mags
Glock 26 with G19 or G17 mags
P320 compact with P320 mags
SW M&P9C with M&P9 mags
My pinky usually just falls into the space and it handles fine for me. It's "ugly" but effective.
Please school my on why you "need" a sleeve.
Does anyone think you can actually damage something?