The gun store guys went all “Tactical Affliction” on their bumpfire stock:
If you don’t know what Affliction clothing looks like, google it. That bottom foregrip does really seem to help with the control of it. The muzzle rise he was getting on the first few shots probably sent them over the berm though which is never good. Unless you’re a seasoned bumpfire pro, those kind of safety ricks are always there with or without a stock like they built.