Bren L4 / .308 build

[cal50]

Before joining the mag section together ( and set the headspace ) denial pins are required to keep an unmodified bolt from dropping in.

Bolt denial pin locations:

1.250" from the receiver barrel socket face
1.660" from the base of the receiver rail up.

I turned two denial pins from a grade 8 bolt .250" diameter x .230" OAL.
Tapped in flush with receiver wall/s then welded in place.

Tested with bolt in carrier for function then weld in place.















Milled off the full auto sear catch from the carrier and piston post~





Rear section must have been torched by the same guy that cant cut a straight line on the other end of my L4.
Spacer in charging handle slot sets the correct space in the cocking slot. When mine was cut it spung in about .050". If its not set straight you will have issues with the striker , carrier assy and cocking handle fit. All have to travel freely and should slide back and forth by tilting.








I have a fixture that pins off the rear sight holes and take down hole to set the correct length.




Tacked and now ready to finish weld rear section together.
Might do some more welding tomorrow.




Mag adapter fits and so does an L1A1 mag~