Ar15 SBR and pistol reliability?


#1

Are SBRs and pistols any less reliable then rifles with "16+ barrels? How much faster do they wear out?


#2

It’s not a question of barrel wear, but more an issue of terminal effect on target. A pistol length AR is a retarded idea at best. 5.56 was designed to perform adequately aka do what it was designed to do (achieve enough muzzle velocity in order to reliably fragment) from a 20” or at the bare minimum 18” barrel. Anything under 18” shouldn’t even be taken into serious consideration.


#3

Except that using an 18" in close quarters sucks, its too long even an AR15 with a 16" barrel is significantly easier to use up close. When I say AR15 pistol, I mean SBR sized at around an 11" barrel not actual pistol sizes.


#4

The 16" length is good compromise between ballistics and compactness. If im going longer then that wouldnt it be better to skip the 18" and goto a "20 for the added volocity?


#5

If you’re going to go SBR or pistol on the AR platform then I would suggest either a pistol caliber (9mm or 45ACP) or 300BO. As Minuteman pointed out, in 5.56 it really is a waste when it comes to ballistics.

As far as reliability goes, running the right buffer helps immensely and if you’re going to build then I suggest a adjustable gas block if you’re going to run it in 5.56. 300BO, not so much.


#6

I dont disagree with you guys but im asking more about mechanical issues then ballistics.


#7

Copy. Would you be interested in going the pup route? You’ll have the benefits of both proper ballistics and an overall compact platform.


#8

I have both, a registered 10.5 SBR and a 7.5 pistol, both are as reliable as my 16 to 20 inch rifles. My 10.5 shoots 2 moa or less at 100 yards and is not something you would want to get shot with. The 7.5 is more for fun and plinking and the bullets still throw a lot of dirt hitting the berm, would not want to take any hits from it either.


#9

Im really thinking about getting a PWS with an 11" barrel , I dont care for bull pups.


#10

Bullpup is the best solution, 20" barrel CQB, in a hall way, in an auto, in the open…full ballistic performance from a rifle that is ergonomically similar to an SBR.


#11

I just dont care for the ergonomics of the bullpup, maybe I just need more time on one. Ive tried a AUG and a Tavor.


#12

Understandable, but it is something that is a perfect solution if you can get used to the different handling of the platform.