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.

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[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~