Gunsmithing Ar15 pistol

[specopsbrooklyn]

What's the shortest barrel you can run reliably for an AR15 DI 5.56mm pistol?

 

[hino895]

I have a 8.5" on my pistol and it runs perfectly.

 

[specopsbrooklyn]

Thanks I just ordered a spikes 8.1 in bbl

 

[fdkay]

Caveat; Whatever floats your boat, buy what you want and rock on.
I don't understand the infatuation in super short 5.56 guns.
Take a look at how much you lose going that short with a round that was originally designed for a 20" barrel.
Compare that to a round that was designed for a 10" barrel like the .300 blk or .221 fireball.

 

[eicas]

I have both .223 and .300 pistol uppers. Like stated above, even with some of the more modern efficient .223 bullets, effective range doesnt extend much past 50yds. The .300 with an 8" barrel (as opposed to a 10.25" or 11.5" .223) still has plenty of oomph at 100yds and beyond. This doesnt even touch the options of heavier weight sub rounds and supressors. One other point: you need to watch OAL with the .223 uppers in order to maintain "pistol" status (for CCW in vehicle). Too long it becomes "not a pistol" and while still legal, it may not be CCW legal in your vehicle.

 

[hino895]

I have the 8.5 223 and a 10.5" 300BO and a 8.5" 458 socom which is a real hoot to shoot using 325gr lead gas checked bullets.