CARM magazine arrived today but fit loosely and fell out of gun when chambering a pellet. Determined OEM magazine, slightly wider than CARM, fits opening better and cutout slot, for barrel that intrudes into mag opening, has two small plastic knubs that "click" around barrel to secure OEM magazine. (One plastic knub can be seen in photo, just above right side of the letter "n" in the word "in.") CARM magazine has small "growths" in the corresponding slot, however, they provide no benefit. E-mailed Darko Dellorco several times with photos, he was unaware of this matter, but agreed with findings. A refund will be issued. Very unfortunate since design and operation of CARM magazine seems superior to OEM, it's just the falling out of gun part that isn't so great. My Gauntlet is a First Generation, not sure if this affects Second Generation .25. WM 