I just got this for my classic army m15a4 sportline and it was probably the most worthwhile airsoft item that is under $80 that I have bought.
fps ~320 total range ~200 ft bb type .20 accuracy- shoots within a 3 foot group at 180 feet (stock 6.08mm barrel)
fps ~320 total range ~200 ft bb type .25 accuracy- shoots within 6 inches at 180 feet
bbs used: for original barrel .20 = crossman (its cheap and beileve it or not they are really good)
with madbull: .25 G&G whites, .25 TSD whites, .25 stealth dark greens (for 1 out of 2-10 tracer)
range increase (probably 10% as a .25 reduces by 10%)
fps increase (the 10% rule applys here too)
THIS IS A GREAT BUY!!!!
Rating: [5 of 5 Stars!]