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Posted: 9/7/2010 7:28:28 AM EDT
I have a partial build that I've been looking for a barrel for. I decided I wanted to go light weight and the only two barrels that seem to come up are the BCM light weight and the Rock River Arms light weight. The both are reputable companies, the only main differences it seems, is that the BCM is a 1:7 twist and takes a .625 gas block and the RRA is a 1:9 twist and takes the standard .750 gas block. Any input, suggestions or experience? Thanks guys.
Link Posted: 9/7/2010 7:33:45 AM EDT
[Last Edit: 9/7/2010 7:34:44 AM EDT by 1811guy]
Daniel Defense makes an excellent lightweight barrel. The RRA barrel is not a true lightweight profile because of the .750 gas block, not to mention it just looks weird because of it. Daniel Defense is also a 1:7 with .625 gas block. Bravo Company sells them, or you can find them on DD's website. They also come in a midlength configuration.

I would go with the BCM or DD barrel. If you are lucky, you may be able to find a Colt lightweight barrel on the EE or Gunbroker.
Link Posted: 9/7/2010 10:08:13 AM EDT
BCM and RRA may be comparable price wise, but they are at totally different ends of the spectrum for quality of materials used and adherence to mil-spec (where possible). BCM over RRA any day, and as the other poster mentioned DD would also be a top-tier choice.
Link Posted: 9/7/2010 6:14:21 PM EDT

Originally Posted By Blackbird97:
I have a partial build that I've been looking for a barrel for. I decided I wanted to go light weight and the only two barrels that seem to come up are the BCM light weight and the Rock River Arms light weight. The both are reputable companies, the only main differences it seems, is that the BCM is a 1:7 twist and takes a .625 gas block and the RRA is a 1:9 twist and takes the standard .750 gas block. Any input, suggestions or experience? Thanks guys.
Try a Centurion Hammer Forged lightweight 16". 1/7 twist CL. I think they are the most accurate lightweights available, if a high level of accuracy is not required, buy something cheaper.


Link Posted: 9/7/2010 8:30:57 PM EDT
Don't discount the Bushmaster lightweight barrels either. I think PKFirearms had some good prices on them.
Link Posted: 9/8/2010 8:16:56 AM EDT
Excellent, thanks for the advice. I think I'm going to stick with the BCM barrel whenever it comes back in stock.
Link Posted: 9/8/2010 11:41:48 AM EDT
BCM or DD for certain.
Link Posted: 9/8/2010 11:07:42 PM EDT
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