As a weapons tech I am here to tell you that the BHP mags a the major with this weapon. The lips on the mag are being pushed outward by the rounds in the mag, this will cause double feeds and that is the most common problem that I have come across at the user end of things. At the weapons tech end of things, there are not very many things that go wrong with the BHP. Yes its old and heavy when compared to modern pistols, but its all we have till someone at DLR get there act together and get us a new pistol.
Bellow is the the mag lip measurement from the CFTO that your unit Weapons Tech uses.
and the opening
between the lips is between 8.99 millimetres
(0.354 inch) and 9.19 millimetres (0.362 inch).
If you have a problem with your BHP having double feeds, take the mag and put it on the ground, find a big rock and drop it on the mag, pick the mag up and go to your CQ or a weapons tech and say you need a new one. (just dont let anyone see you do this)