Mid-length upper on a rifle lower?
I just recently bought a Spikes 14.5 Mid-length upper and have been using it on my Colt 6940 lower.
I am looking to pick up a lower and, since I live in the People's Republik of New Jersey (where adjustable stocks magic transform rifles into assault weapons), have been considering putting an A1 stock on the gun. They are nice and light, about the right length for me (maybe a little long), and the improved cheek weld over M4 type stocks makes it worth it.
The one question I have is what to run in the rifle tube. The lesser dwell on a 14.5 means that there will be less gas pushing back (http://www.03designgroup.com/technot...gth-gas-system).
I have seen that some folks run an H1 buffer. Some have even put a spacer in the end of the tube to make it carbine length, then run a carbine spring and buffer.
Any recommendations? Thanks.