Used Primary Weapon Systems Mk116 upper in 5.56. Itís piston operated. It is has about 700rds through it. Iím only selling because I upgraded to their newer model. It should be noted that it has an FN marked FSC 556 comp on it (same comp just marked for FN). I can send more pics on request.

Asking Price:$1050 OBO Shipped (Reasonable offers considered)
Payment: MO or PayPal +4%
Shipping: USPS w/ insurance and confirmation unless otherwise agreed upon
Trades:May consider a partial trade for an Aimpoint H1/ T1 (preferably 2moa) in Larue LT751 mount or Eotech (Brownells CQB T-Dot model only)
Contact: Please send me an email. I rarely check my IMs.
Other:I'm located in Phoenix for local deals. Be advised this is cross posted in other forums, first come first served.