Bren MKII rescue~

[Flying10uk]

Did you use the same jig on this MK2 as you used when you welded the MK1 or are there differences in the receivers, between marks, that prevent the use of the same jig?

I'm thinking that, theoretically, the same jig should be able to be used on the MK1 and MK2 Bren because the upper and lower receivers are interchangeable but what works "theoretically" doesn't always work in practice.

[cal50]

Did you use the same jig on this MK2 as you used when you welded the MK1 or are there differences in the receivers, between marks, that prevent the use of the same jig?

I'm thinking that, theoretically, the same jig should be able to be used on the MK1 and MK2 Bren because the upper and lower receivers are interchangeable but what works "theoretically" doesn't always work in practice.

Same jig.
Its built four of my shooting buds builds and I have five to build myself.

The internal dimensions are the critical ones and the exterior cosmetic. The jig is machined to internal receiver dimensions.

When a receiver is cut it typically moves and gets larger or tighter. Using the jog its easy to get it really close so there is no internal steps from section mismatch.

My MKI internal surface ~

Before~






After~

[Flying10uk]

Lovely job.

[cal50]

Killer work week but forced myself to make a little progress on stuff that has to get done. After welding making sure the receiver, lower frame, cocking handle and bolt & carrier travel freely is a must do.

My standard is the "tilt test" for the bolt, carrier and charging handle to travel their full range by tilting the entire receiver back and forth under their own weight.

Now I can blend in the welds and make it pretty.