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Guys,

just need some fuel to light this fire...
I think im in teh mood to upgrade my upper. If I wanted to go to that sweet, sweet A3/A5 upper style teh parts I would need are:

Reuse the FA from my MR
Reuse ejection cover from my MR
Reuse charging handle from my MR
A3/5 style barrel nut
either a A3/5 barrel or get mine modified to work with a3/a5 upper?
reuse gas block, and hand guard

is this correct? any other parts that I need?

Thanks!
 

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Also make sure the A5 upper has the op rod bushing installed as nobody has replacements (yet). The A5 went with a simpler sleeve and roll-pin system instead of a threaded bushing like you see in the MR556.
 

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Good luck finding an A3/A5 barrel. I use Nefarious Arms barrels on my assembled A3 uppers. Marvin modifies them for me. I just send him the receivers and viola!
 

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Good luck finding an A3/A5 barrel. I use Nefarious Arms barrels on my assembled A3 uppers. Marvin modifies them for me. I just send him the receivers and viola!
Does he modify the barrel to fit the upper or modify the upper to fit the barrel? And then which barrel nut did you use?
 

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I think it's correct and it's sounds great well, and also don't forget to upper the A5.
 
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