An aligning insert add-on for the UPLULA or 22 UPLULA loaders. It assist loading single-stack magazines by eliminating wiggling of the mag inside the loader. It's an insert to your existing loader, not a new loader. Best for: 1911 .45ACP mags (Using the UpLULA(TM)) 9mm single-stack mags (Using the UpLULA(TM)) Converted .22LR 1911 mags (Using the 22UpLULA(TM)) The 1911AI(TM)is useful with mags of width less than 14.5mm (0.57a ^2). Wider mags will not fit in. Mfg: Maglula Ltd.