I’ve mentioned that to 2 gunsmiths and they were recalcitrant on the matter. Legally yes it could work.
Here’s my previous NR ACR barrel. Don’t have a photo with a tape measure, but standard 16” Krieger barrel, with built in flash hider. NR status measuring 18.6 overall length.
https://ibb.co/XYK20dZ
Chromed and in 9.3x62 Mauser please.
Last I checked this is a AR10/AR15 barrel thread. At least you didn’t hijacked this with a shotgun barrel length like the last time..
If they were made with several barrel profiles and brake/hider combinations and they had competitive pricing, I think they'd become the non-restricted standard in this country. I'm also curious how a 17" barrel would do against the 16's and 18's ballistically.
You only lose about 20 to 50 fps for each inch (in these longer lengths, not for shorties)
Pretty negligible
A 16" is about 3178 fps using 55g
To 3205 at 18.5"
That's only about 25 fps
These are approximate numbers as every rifle and barrel and cartridge is a little different but the loss will be comparable pretty much
Mid Length Gas system for sure with a journal long enough to take and FSB. Want something suitable for the Magpul MOE SL hanguard.
Would love to acquire an ATRS and replicate my S&W M&P in non-restricted.