Ask the Community

Juan, lwrc is great but buds doesn't have any 300blk pistols in stock from them. I'd either go with stag arms or here's one from Adam arms that is great. Hope this helps, link to Adam arms pistol here..... https://www.budsgunshop.com/product_info.php/products_id/127456/adams%2barms%2bfgaa00432%2bp2%2baars%2bpistol%2b300%2bblack%2b8%22%2b30%252b1%2bblack%2bsba3%2bpistol%2bbrace%2bstock%2bblack%2bpolymer%2bgrip%2badams%2barms%2bm-lok%2brail

Funny you should ask, I was just researching this exact question for myself. I originally planned on getting a Noveske upper and Lower, tossing on a faxxon barrel, and a RA535 trigger, and probably registering it as an SBR so I could do a MFT minimalist stock or a b5 stock.
But Noveske recievers are unobtanium, so I'm thinking I will probably just go with this POF P415 edge with 10½" barrel. It is piston driven and is very sharp looking,
https://www.budsgunshop.com/product_info.php/products_id/142550/patriot+ordnance+factory+01799+p415+edge+300+black+1050%22+30%2b1+black+anodized+rec+9%22+m-lok+handguard+black+nitride+barrel+mat

The SIG MCX300 is a decent option as well, as long as you don't mind buying from sig (I personally don't like sig Sauer and would never give them my money based on some of their shady practices but they do make a good product)
None are i stock right now but they typically range from about $1700-$2500
https://www.budsgunshop.com/search.php/type/handguns/caliber/10000638-300+aac+blackout+whisper/q/sig+sauer+mcx+300