I recently encountered a problem with one of my glock 19 mags that ive never run into before. First off my glock 19 is my truck/camping gun and its gotten plenty of use. Id estimate that ive put probably 2500-4000 rounds through it in the past three years. I always keep 6 clips loaded with corbon dpx hollow points and up until last week all the mags worked great. By great i mean they all slid into and fell out of the frame with no resistance but they didnt have any play in the frame. Now to my problem, one of the clips now has severe resistance while being seated in the frame and i need to "rip" it out of the frame to remove it and it needs a firm slap by my palm to correctly seat the mag. It feeds all ammo fine and i dont see any signs of wear on the mag or inside the frame so i dont know what is causing this problem. Any ideas? I already took the mag out of circulation. Is it worth trying to fix or should i just toss it? My best friend wants the mag for his glock but i dont want to give him a mag that might let him down if he ever needed it.