Various AR-15 caliber bolts would be nice, that would allow us to build them to our specific liking more (7.62x39, 224 valk, 6.5 grendal, etc)
You missed the great big word INTEGRATED
How about hiring some gun designers and or Consulting with a tear one company too sharpen it up. There are those of us who will spend $3000-$5000 On a quality rifle not everything have to be made for mass market thousand dollar or under price tag
This came to me in a dream. Blowback bolts to make pistol calibre uppers.
What about a push-button safety?
Is that possible?