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11/22/2017 10:05:29 PM
Posted: 9/17/2004 7:32:50 PM EST
I just ordered a Pre-ban RRA 16" R4 for my bushmaster post ban M4 (With the Y comp brake).

Is there any potential issue matting the RRA barrel on the BM? How does the RRA finish and the BM finish compare in relation to one another? How is RRA on delivery times?

I will be having my gun smith change the barrel out.

Thanks,

ct602
Link Posted: 9/17/2004 7:57:44 PM EST
Should be no problem. I believe both RRA and Bushmaster use rifle barrel extensions, so putting the new RRA barrel on your old Bushy upper will be fine. Finish should be comparable. As for delivery times, that'd be anybody's guess with the number of orders that are being placed these days.


Link Posted: 9/17/2004 11:47:39 PM EST
Isnt the RRA R4 cut for extended feed ramps?

If it is you will have to dremel your upper to match the feed ramps.
Link Posted: 9/18/2004 3:36:17 AM EST
[Last Edit: 9/18/2004 10:53:27 AM EST by ct602]
Thanks
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