AR Pistol 7" or 10.5"

[ripcurlksm]

AR Pistol 7" or 10.5"

[SDM44]

http://www.calguns.net/calgunforum/showthread.php?t=968916

[tacticalcity]

Depends on caliber. 7" is great if running 9mm. 10.5" is statistically more reliable if running 5.56mm. Also...get the correct weight buffer regardless of barrel length. Will make all the difference with regards to reliability.

That said, an AR pistol is mostly a toy. So get what ya like. I dig the looks of the shorty AR pistols a lot. In a perfect world, get both.

[Fenr1r]

I'm going 7" with a KX3 and a 9" hand guard. 10" + muzzle device length is too long for a pistol for me unless we ever can SBR it.

[tacticalcity]

Cool!

[THEJAPINO]

There should be an option for "both" in the poll.

[bohoki]

i got the 7.5 cause i wanted it small but the 10 lets you use carbine handguards

[SNCaliber]

yup 7.5 for 9mm, 10.5" for 556/223

[k1dude]

Since .223 sucks out of both lengths, go shorter simply because it looks cooler. If we were talking about .300 Blackout, I would say 10.5" because there are real performance benefits to the longer length.

[phase1]

If just for fun 7.5 in 556, otherwise 10.5 & up... If 9mm, 762, or 300blk 7.5 will work

[RobertMW]

Basically, do you want the fireball maker, or the really big fireball maker?

[Josh3239]

10.5 offers more advantages, 7.5 has the cool factor.

[zcktomcat]

Ballistics wise out of a 10.5" barrel a .223 remington will be exiting the muzzle at a velocity of about 2600 fps. A 7.5" barrel will give you muzzle velocities of only 2300 fps. Fackler found that the M193 55 grain round will only reliably fragment at an impact velocity of 2500 fps. Being that the fragmentation is a large part of the wounding mechanism for the rifle that is something to keep in mind if you plan on using the gun for defensive purposes. That being said either barrel length will be deafeningly loud even in an open field and will almost definitely result permanent hearing damage. This makes either choice poor for defensive purposes. If you're getting the gun just to have a good time at the range, as I did, I personally went for a 7.5". The shorter barrel will give the gun better balance, it will weigh a lot less, and big fireballs are just fun.
My main suggestion with either choice is get a good break that redirects the concussion forward (IE noveske KX3 "pig brake) and not a muzzle break that reduces recoil by redirecting the gasses to the side. It will be the difference between everyone at the range wanting to check out your cool piece and everyone hating you guts.

Edit: Also keep in mind most any short barreled rifle caliber gun will take some experimentation to get it to run reliably. Be prepared to test different ammo, buffer weights, and other small parts to get it running well.

[bohoki]

here is my dinky caution turn down your volume cause this is a loud bastage

http://vid43.photobucket.com/albums/e366/bohoki/V08-20-14_1329_zpsfff180d2.mp4

blam its hot

[TacRak]

You cant go wrong with either one