PBS-4 Silencer

thingiverse

Following a recent comment, the first version of the muzzle cap appears to be a bit loose (0.2mm oversize). I have added a tighter version with only 0.1mm oversize. The previous version still works fine on my barrels. Since some plastics shrink more than others, it makes sense to have options available here. If this issue becomes a recurring problem, I will redesign the part in a more modular way so that you don't have to reprint the entire thing every time. I have also reinforced the knurled ring slightly (+1% in diameter) because I managed to split one thread from my print. I figured it wouldn't hurt to add some extra reinforcement to this area. A picture of the printed model has been added, and I will slightly modify the design to include a bit more material on the muzzle cap threads. If you look closely, I was able to snap the "smooth" part of the muzzle cap (mainly because I rushed my print settings to save time, but it is also quite thin). I may also slightly tighten the 14mm CCW threads. They thread properly, but on lightly worn threads there is a bit of wiggle, and I managed to pull the thread on my first print (possibly due to using too much force). This is a quick model of the PBS-4 silencer for airsoft AK. To make it easier to print, I have separated the silencer into three elements: * A muzzle cap with 14mm negative threads * A main body with threads on each end. I tried to keep the dimensions close to the original but they are not exactly the same. I left a cylindrical cavity inside so baffles can be fitted if desired. * A front cap that threads inside the main body Quick note: Except for the 14mm CCW threads, all threads are positive and purpose-made. They are large on purpose (easier to print and a bit stronger). Except for the muzzle cap, all parts can be printed without support. The main body and muzzle cap should be printed conical side down. This is still a work in progress, and I have not printed the part yet. I recommend using strong filament for silencers (PLA just won't cut it outdoors). I would suggest ABS or poly-carbonate if you can print those. ASA may also be a good alternative if not.