NPAS buffer/tournament lock
thingiverse
This fits the Angel Custom and the RA-tech NPAS. The way it operates is by printing them out of TPU (or the strongest solid material you have, with TPU highly recommended due to its properties). First, unscrew the NPAS adjustment bolt all the way. Next, install as many spacers as necessary, then tighten the NPAS down as tight as it will go. One millimeter spacer equals roughly 50 frames per second, give or take five to ten frames. I have these installed in my Open Bolt M4 and they're working a right treat to bring down my fps.
With this file you will be able to print NPAS buffer/tournament lock with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on NPAS buffer/tournament lock.