You guys are good at maths.
Hmmm No we need to know what buffers and springs to use with what length
what's the gas system length on your 10.5" uppers? looking to do the Adams Arms piston conversion so any input would be helpful
thanks
https://truenortharms.com/ar15_default_store_view/adams-arms-ar-15-gas-piston-conversion-system.html
looking to do a conversion on your 10.5" complete upper (which I already have).
Thanks!