So I'm looking for a stock with a built in ammo carrier..I really like the looks of the speed feed stock as it doesn't seem it would change the base stock ergonomics much but it looks like the shells might fall out rather easy..I also love the feel of a full pistol grip stock but can't seem to find many reviews on the few of those I have found that have a built in carrier..also I'm concerned it may interfere with the slide lock button like the standard pistol grip does..anyway what are some recommendations for a good ammo carrying stock