Pondering a pistol build. Opinions on the ideal AR pistol barrel length? This will not initially be a suppressor host but might be in the future.
10.5 still has a fair amount of muzzle blast. What you gain is reliability, even moreso with an adjustable gas block.
As far as accuracy is concerned, ammo and barrel mfr and twist matter.
Ideal for what barrel? Here’s my opinion
22lr - 4”
300blk - 8.5+”
223 10.5”
7.62x39 10.5”
9mm - 5”
Ideal for what barrel? Here’s my opinion
22lr - 4”
300blk - 8.5+”
223 10.5”
7.62x39 10.5”
9mm - 5”
Yup. 5.56 was designed as a rifle round and needs more than 10 inches to burn the powder. I suppose a reloader could develop some loads with a somewhat faster powder to mitigate the blast in a pistol build. Also, heavier bullets may help somewhat but I've only shot factory ammo in my ARs and factory 55 gr in the 5.56 builds my friends had.
I was actually thinking 11.5 or 12.5