I'm looking for pictures of an M-16/AR-15 service rifle showing the modification described below:
I've found a lot of pics of a "tension screw" that pushes up on the take-down pin lug but I don't think that's the same thing.
A screw may be inserted in the back radius of the pistol grip where it
joins the lower receiver. This screw
may extend into the rear lock-down
lug of the upper receiver for the purpose of securing the upper and lower
receivers. The screw head may not pr
otrude above the original surface
of the receiver. Both ends of the orig
inal takedown pin must remain in
place so that the original outside
configuration is not changed.
I've found a lot of pics of a "tension screw" that pushes up on the take-down pin lug but I don't think that's the same thing.