FS: Used Leitner-Wise Rifle Company (LWRC) M6A1 16.1 barreled piston upper 5.56mm $850 I have a used Leitner-Wise Rifle Company (LWRC) M6A1 piston upper in 5.56mm NATO for sale Caliber: 5.56 NATO Barrel:] Fully chrome lined, 16.1" M4 profile 1:7 twist rate, with standard A2 flash hider Hand Guard: Carbine length Grenadier Precision free-floating quad rail, with removable top BCG: Full auto bolt carrier, bolt and standard charging handle This upper was purchased new in 2005 (I think it was 2005 . It might have been 2004???). It is not a piston conversion it was assembled entirely by the Leitner Wise Rifle Company. (Now LWRCI) I am the original owner. I have fired approximately 2200 rounds through this upper: All brass-cased Federal XM193 or AE223. The gun has been meticulously cared for and cleaned over the years, although it has the expected wear from use. This upper has been shot (including at a carbine class); It has not been a safe queen. The short stroke piston system makes this upper very reliable easy to maintain. There has been no evidence of carrier tilt wear. This is a great upper if you run a suppressor (very clean!) or have a registered full auto lower. Bolt carrier group (two piece, not the one-piece BCG currently sold by LWRCI), and bolt face Short stroke piston system There is some baked-on carbon on the barrel under the top rail (due to the function of the piston-driven upper). I have not been able to remove this residue, but it does not appear to have caused any corrosion. There is some superficial wear on the rails that does not affect the ability to solidly attach accessories. The worst area of wear is near the ejection port. This piston upper has been and remains extremely accurate for me. (Definitely the most accurate carbine I have owned) This is the last target that I fired using this upper prior to cleaning it and putting it up for sale: 10 shots of Federal AE223 55 gr FMJ at 100 yards from a sandbag, using an Aimpoint C3 2MOA. There is one pulled shot that I called...apparently I was thinking about something else at the time PRICE: $850 plus $25 shipping Or make a reasonable offer. Trades I'd consider - asking or adding for $$ to make up the difference: - Arsenal (Saiga) AK in 7.62x39 - S&W 442's or 642's - Factory threaded barrel for Sig P226 1/2x28 - Factory ammo: WWB .45ACP, 9mm and/or .40SW. Winchester 308 FMJ, other?? Terms: USPS M.O, preferred., Personal checks held until they clear. I will not to use PayPal due to their anti-gun policies. (Let's stick together folks!!) I will ship upon the receipt of funds. I've mostly been a lurker on this site (Obviously, if you look at my post count!) You can check my feedback on AR15.com under the name "Cioppino" Please email me at email@example.com if interested. Will try to reply to all emails within 24 hours. Thanks for looking.