Need Best Price Aero M4E1 Lower

[diddlyv]

After putting my 30-357 lower together last night, my guess is that overtightening won’t be nearly as big of an issue on an M4 as it is on an M5 lower. And I will admit to having to dig into one of my “frequently lost parts” kits after the bolt catch detent was launched across the room getting the roll pin set. I think it’s in a rather large aloe plant.

To little too late but I like to use a dummy punch from the other side to hold the catch in place when trying to insert the roll pin with out launching parts or buggering the pin or receiver