Suppressors RRA LAR-9 9mm AR as a SBR?

[corey4]

i found a RRA 9mm AR 16" barrel for a "decent" price.

http://www.rockriverarms.com/index.cfm?fuseaction=category.display&category_id=236

i would like to make it a SBR, suppressed.

i learned in another thread i started:
http://www.snipershide.com/forum/ubbthre...596#Post3893596
that taking a 16" AR-15 down to 10.5" is a bad idea, and am currently on the hunt for a complete factory upper.

would i have the same ill effect doing this to a 9mm? there is no gas tube.

 

[jonaddis84]

Re: RRA LAR-9 9mm AR as a SBR?

no

 

[corey4]

Re: RRA LAR-9 9mm AR as a SBR?

no it is not a good idea, or no i will not have an ill effect?

 

[In2b8u]

Re: RRA LAR-9 9mm AR as a SBR?

The 9mm ar RRA is a blowback design. No gas port issues. You can cut the barrel down as far as you want with out functions issues.
My 9mm sbr will sport a 5 in bbl with a FFL rifle length handguard. then the can will tuck under the handguard.
Probably the easiest of ar chamberings to sbr with out issue in function.

 

[corey4]

Re: RRA LAR-9 9mm AR as a SBR?

i plan on making it integrally suppressed.

i have a YHM cobra that i am not happy with at all, so instead of having it sit around not getting used, i figure i'd slap it a rifle.

 

[Phylodog]

Re: RRA LAR-9 9mm AR as a SBR?

I cut this down from a 16" several years ago, ran with no problems

 

[corey4]

Re: RRA LAR-9 9mm AR as a SBR?

do you have a suppressor for it?

 

[Phylodog]

Re: RRA LAR-9 9mm AR as a SBR?

Here's a pic with the can before I coated it

 

[corey4]

that's awesome.

what mags do you run? are the c-products really that bad?

 

[bengineer]

I use C products on a similar 9mm upper, both with and without a can. I haven't had any troubles with them, even full auto.

And to reiterate, barrel length doesn't affect the 9 like on a gas gun. Don't go much shorter than 4" though.

 

[corey4]

i am going to go around 10". i plan on permanently attaching my YHM cobra so i don't have to SBR the lower.

my YHM is giving me fits with my sig and on the XDm i had, so instead of not using it, i'll let it live on the new AR-9mm, and pick up an osprey or octane next month so i can play with the new can next year.