For over 50 years, no one has invented a jam-free, pocket-size loader for Ruger’s factory 10/22 .22LR mags. Following three years of refinement, here we introduce a perfect little loader – which actually work! The loader fits: Ruger’s factory mags: BX-1, 5, 10 rotary, and BX-15 and BX-25. S&W T/CR22 10rd mag. (tighter fit). The loader is more compact, durable, smoothly-operated loader compared with any other 10/22 loader on the market! Never jams! Will not dent delicate .22LR cases. Will not loose the bullet from its crimp! Never leaves a trace on the tip of the bullet. Painless and quick loading. Pocket-size. The Unloader (also sold separably, p/n LU32B), packed with the loader in a blister, fits and unloads ALL 10/22 – type .22LR magazines of all manufacturers, including: Ruger factory mags., T/CR22, Butler Creek, Black Dog, Eagle, ProMag, Shooters Ridge, Tactical Inc. Additional benefits: Loader & unloader set (p/n LU30B): Are simple to use, Eliminate thumb pain and injury, Eliminate wear on feed lips, Prolong magazine life, Are lightweight and will fit in a pocket, Are reliable in all weather conditions, Are made of durable reinforced polymer NOTES: The loader fits and loads only genuine Ruger factory 10/22 BX .22LR magazines and T/CR22 mags. One may damage the loader if attempts are made to load non-Ruger/TCR22 mags; this will void your warranty. The loader will not fit mags coupled by TriMag and DuoMag.