X-Products is making a 50 rd drum for colt magazine ARs. They are also going to make a 50 rd drum for 9mm ARs that use glock magazines. For a third product they are making a 32 rd drum magazine for Glock pistols. This seems overly complicated and unnecessary when Glock already as a 33 rd 9mm magazine. I do not see the benefit to a drum of similar capacity and surely increased cost. Right now this is a prototype. They need to increase the length so that it can fit full sized Glock grips.