MachIVshooter
Member
Since I don't know what a "lightning link" is and because the lower is a "stock" 1999 Bushmaster, I'm guessing I don't have it. However, I'm curious, so can you tell me about it? Thanks.....Rocket
The lightening link is 1.5 ounce, $10,000 piece of heavy sheet metal that probably cost a nickel or two to make.
It's a two piece unit that causes the rear catch to release the hammer when the bolt reaches full forward position. The bolt hits the tang which, using the rear takedown pin block on the upper as a pivot, draws the link backwards, pulling the catch back with it.
As for your lower; Stock AR lowers typically cannot accept M-16 FCG or a DIAS without milling. Having all the parts on hand plus a lower that can accept them = guaranteed constructive possession if you got caught.