I bought a Maddox IV and a Fi/Ra/Co Cause Amp wich is used for BLP weapons.
But i can’t attach the amp to my Maddox.
Does anyone know why i can’t use it?
BruuD
Maybe pistol or amp are damaged too badly ? try fixing them a bit and place and take out from storage. Sometimes simple relog helps 
If you bought it in the auctions, simply relog and then try to put it on. It’s been a glitch for some time now that attachments from the auctions can’t be put on weapons until you relog. 
GL, my friend.
relogon fixed it, thanks