[AngryViper]

Originally Posted by ThunderCactus

Apparently the M4A1 RISII is supposed to fit both
Check reviews on madbull's DD rails

http://madbull.com/catalog/en/produc...a1-ris-ii.html

I tried clicking on the link to the the review by Airsoft Ukraine but access was denied for some reason. Also tried googling nothing really came up.