“Ordered a KWA Vector electric drum mag from Tapp Airsoft and it arrived promptly in a couple weeks. (Their product is made to order so it can take longer as a heads up to those in a hurry). Customer service was great. Arren was extremely helpful and quick to respond (a day max but usually same day). I’ve now had their product for several weeks and I am extremely satisfied with it. For a gas user the constant need for gas, extra magazines, reloading, etc can be a pain for indoor cqb or outdoor skirmishes. This eliminates all of that on top of making your loadout only have to consist of an hpa tank. The drum itself works great. No issues (have only gone up to .30s so unsure of heavier bbs). I did experience slight jamming issues at first but later found out it was due to not cleaning the actual magazine as there was some grime or dirt that had gotten into the Vector short mag. I thoroughly enjoy this product and am an extremely satisfied customer of TAPP Airsoft. 5/5 easily.