I am putting together my first AR, I started out planning to do a carbon length for a short light weight rifle but I am putting quit a few higher end parts and wondered if I should be using a 20" barrel for better precision or Is there not much of a difference to the down range effects of a shorter barrel to a longer barrel for an AR?
for a reference here is my parts I am using
Defiance Machine match receiver set
JP silent capture buffer
JP LOMA carrier
JP high performance bolt
to be ordered a Lilja M4 barrel or 20" barrel