Gun Building, Modifications & Repairs
I’m going to overhaul an ICS M4, and want advice for the lowest stress combination for my specifications.
So, a 22 TPA motor can easily pull an M120 on a 12:1 set. The stress on the gears, however, gets to be pretty impressive.
A 16 TPA motor can easily pull an M120 on an 18:1, and here the...