I couldnt get the T.I. mags to feed 25 rounds reliably, let alone get 25 rds in before they piled up inside and jammed everything. The set screws had random resistance on the threads, some were loose enough to turn with my fingers. Luckily Paul the SKSMAN was happy to give me a refund for the $130 US I spent on those contraptions. I got 2 32 rd promags from Jerry that ran flawlessly but now I prefer the new Shooters Ridge 30 rd. double stack mags. Every bit as reliable but far more compact, without the banana look. IMO they look perfect under a carbine. Tried a hot lips, cleared more jams than rounds fired. YMMV