AR uppers

BTW RRA makes a great rifle, not entirely Mil-spec but it's a great civilian shooter. Good choice! I have a Standard A4.
 
You DO WANT an RRA upper.... :D

Questar is the only one that normally stocks RRA. Keep in mind that RRA is relatively new in the AR market and Questar was the one to introduce the brand up here.
 
Why do I want RRA? the bull barrel must also have the target crown. No muzzle brake, Someone said Wolverine sold a stainless Bull barrel target upper Not sure on the make. but this was a few years ago. what about DPMS or Bushmaster Varmint / Target upper. I find the RRA price a bit much.
 
Brocolt said:
Why do I want RRA? the bull barrel must also have the target crown. No muzzle brake, Someone said Wolverine sold a stainless Bull barrel target upper Not sure on the make. but this was a few years ago. what about DPMS or Bushmaster Varmint / Target upper. I find the RRA price a bit much.
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If you find RRA pricey check out Bushmaster prices up here. Wolverine deals ArmaLite which is good stuff, but again, it's normally priced higher than RRA.
 
KevinB said:
:rolleyes: -- its called SAVING MACHINE TIME...
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Honestly, I don't think a company like that can save a whole lot of money by not spending several minutes and turning those barrels down to an A2 profile. I'm sure they have the resources to do so, seems like they simply decided not to.
 
koalorka said:
So the company can guarantee MOA accuracy on their stock rifles.
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I take those MOA guaranties with a big grain of salt
grillinsmiley.gif
 
A heavier profile AR barrel will NOT shoot better than a similar light profile.

I've seen PENCIL C8 barrels shoot sub-moa. The issue with AR barrel sizing is ridigity during heating -- and quite frankly 5rds per mag is not going to make an issue.

The issue on Colt and others HBAR profile etc have been explain on other forums as a form of cost cutting due to removing machining time from profiling the barrel to a smaller diameter -- and has been born out in testing different companies HBAR's against their lighter profiles.

It was a genius marketing coup since they called the HBAR's MATCH and got a premium for a barrel that cost them less to make.

AR Flattops suffer from the law of diminishing return on heavy and longer barrels -- Kino Davis (Gunzilla on ARF.com) has a nice testing chart on M4carbine.net about receiver flex testing...
 
Than again HKO decided to go with an HBAR profile for their HK 416, so I'm sure it has it's benefits in heat capacity/dissipation, rigidity, recoil absorption etc..
 
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