10 of the best guns on this site in my opinion so here goes......
Step 1: Mac .10
powerful (with right elastics)
mag capacity high
mag always works well
comfy handle (though for me i had to alter it a bit)
trigger is cool
I AM COOL! lol
took me a while to find the right elastics to go with the gun and had to change end of ram to an A shape 1-slot-grey-connector which i advise everyone else to do also.
10/10 : D
Step 2: Z35 Knex Assault Rifle
Many great ideas
Variation of magazines
Guide on Mlcad so it's really clear.
Most comfortable handle on any gun I've built.
Extremely Authentic in it's look and operating.
Reasonable piece count.