450Bushmaster.net

https://store.cornerstonearms.com/

Search for ARs under term "5.56 x 45 NATO"

If you want a .357 wheel-gun, they have them listed as ".38 Special"... search engines won't find these listings because of that.

Also has some 450b stuff...

Note: their search function is a bit squirrelly ... use broadest possible terms.

bear creek has tons of uppers in stock right now too. pages of them... they've got their facility production turned up to 11 it seems.

last i checked earlier today, there were >10 or so calibers available, and over 80 configuration options to select from in both pistol and rifle configurations - including 5.56, 223 wylde, 6.5 grendel (type II), 300 blackout, 6.5 creedmoor, 308, 9mm, 7.62x39, 243 win, .224 valk, 450 bushmaster, 350 legend, and 458 socom

https://www.bearcreekarsenal.com/upper- ... es?stock=1


prices have been going up steadily over the last 6-8 weeks, but appear to have leveled off for a moment. many uppers can still be had for under $400, but the majority are all >$300 right now - which is still a great price considering the rest of the market right now.