A base insert for the 22UpLULA and UpLULA loaders when using 1911 format magazines.
Eliminates any wiggle when loading.
- .22LR cal 1911-width mags such as the GSG 1911 magazine
- .45 cal 1911 mags
- .40 cal 1911-wide mags
- 9mm cal single-stack mags
Attaches to the ring loop on UpLULAs for storage.