Looking for piston SBR/pistol upper for my pistol upper. Prefer under 9 inch/ideal 7.5. open to Sig, Adams, etc. I Also have a Bushmaster .308 that takes magpul mags that is for sale and is not stock includes magpul and bi-pod plus extras. and will be post soon. Will trade Tikka T3 lite .308 plus cash, or full cash for right upper. will also look at Direct impingement systems. text or call, prefer text. 3six0-2nine8-4543 also email firstname.lastname@example.org Located: skagit.