BudsGunShop.com - which Rail?
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which rail is on this MR556? it is the quad rail or the newer Keymod rail?
thanks
3 Answers

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Extended quad rail. = Specifications and Features:
5.56 NATO (accepts .223 Remington) 16.5" heavy contour barrel--
1:7" twist--
30 rounds--
Extended quad rail.--
Picatinny rail machined into the top of its upper receiver--
Troy Industries Micro mechanical sights--
MIL-STD-1913 "Picatinny" rails--
9" free floating modular rail system handguard--
Cold hammer forged barrel--
Two stage trigger--
HK multi-tool--
37.68" overall length stock extended--
33.90" overall length stock retracted--
3.07" overall width--
7.64 lbs trigger pull--
14.60" sight radius--
9.45" height--
8.60 lbs--
Black
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Hi Andy, Its the new 9" free floating modular rail system handguard