The two halves don’t seem solidly linked and I can’t stop thinking it may crack. I have no experience with non-GLOCK magazines and would suggest sticking with the OEM original article. It takes just few second to empty the whole magazine and it’s very easy to stay on target, so a lot of fun is guaranteed. The trim pistol-caliber carbine is a little less handy with that long mag attached, but the tradeoff is outstanding firepower. My S2K takes GLOCK 9mm handgun magazines, but the advice is valid for all the possible ammo configurations. Most of the SUB-2000 accessories mentioned below have been with me and tested for about one year and 1200 to 1500 rounds.Įxtended magazines – These are definitely must-haves.