You must’ve rattled his cage and he took it out on the OP 😂

Worst case it's a reshim and slight modification to the pistol grip (or a new pistol grip altogether) to achieve a proper engagement angle.

Wow. 3 for 1 here. The gun is only £20 less than retail, the sight is £5 less (and that's from DCA whose known for stupidly high prices) and the M320 is a few quid less. I wonder if he'll tell me what he was smoking to come up with those prices