Bushmaster fluted 11.5 1/9 HBAR barrel, standard FSB w/bayo lug on a Rock River A3 upper.
Upper has a 3 lug adaptor and an HK 3 lug flash hider, Knights R.I.S. with vertical fore grip and assorted rail covers (11's, 5's, 2's) and Knights Low Profile Flip-up 300m rear sight. Comes with bolt, full auto carrier and charge handle.
Upper has had less than 500 rounds fired with no full auto fire.
Well over $1300 invested
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