Recently bought a RDB-C before moving to WA state. Never was able to take it to the range since I couldn't load more than a few rounds in a magazine. Every time I rack the charging handle, slap it down from the rear position, use the bolt carrier release it fails to feed crushing the cartridge on the feed lips. This happens with factory PMC 62 grain xtac and federal 55 grain. Called and emailed keltec going to ship it back. If all else fails I'll polish the feed lips myself but it doesn't make a whole lot of sense to do this to a new rifle it should just work.