I watched a video on monkee mods that you can replace the picatinny rail on the upper receiver with a metal one. 3 screws hold it on. But i have stripped down my blaster and seems the picatinny is actually part of the upper receiver. I have a V3 LTD HK416.
Is this upgrade on earlier receivers and not the V3?
I should have checked before i ordered the alloy picatinny rail but now im going to be stuck with one