This orange plastic nut installs nicely in place of your original muzzle nut which can be handy for transporting your blank fire BFONG to and from events. Its a nice little touch which helps to avoid at least some awkward questions and may even help prevent you becoming embroiled in a chaotic scene should the wrong people lay eyes on your reenactment load out. The set includes 2 orange nuts and a little safe keeping fob for your original, which you can easily loop around your sight hood or trigger guard like attaching a price tag.
These nuts are threaded to match accurately reproduced BFONGS with M15X1 threads which is the same as original MP40's. The nuts and fob are 3D printed and chased with a tap to ensure the threads are accurate. Do not fire your weapon with the orange nut attached, excessive heat may cause it to melt.