I feel a want here. An upper that fits an AR15 lower with a bolt action? Is there a reason this can't happen?
Well, I don’t feel so silly now. I had a surplus of 115gr 30 cal bullets and loaded some up in the Blackout with 5 or 6 grains of Trail Boss. Not strong enough to cycle the action but when shot through a can, they are quieter than a BB gun.300blk loaded with 120gr cast subsonic is actually pretty enjoyable to shoot as a straight pull bolt.
Great. Just great. That's got the already nearly stripped gears in my brain spinning out of control. If I sell the .223 AR and the .224 Valkyrie upper, I can fund one of these in .224V AND pay for the Savage bolt action conversion to .224V. AAAAUUUUGGHH!Bolt Action AR Upper for AR-10 & AR-15 | Uintah Precision. Check these guys out.