As a matter of interest regarding the 7.92 'sterile' Brens marked - 7.92 BREN MKI and the difference in the piston and piston extension between these and all other types of .303 and 7.92 (CH & 0T prefix) Brens some further info.

As mentioned earlier the piston location pin is further forward on the 'sterile' 7.92's on the very few that I have seen.



As there may have been some doubt on this feature on these few guns I thought it prudent to check with the examples (accession number 19760332-092, serial number 1-0001 and accession number 19760332-054, serial number 2-3429) held by the Canadianicon War Museum.
These were aquired by the CWM straight from Canadian Arsenals Limited so there provenance should be good.

Both Brens have been inspected and they do indeed have the same piston and piston extension as per other 'sterile' 7.92 Brens with the piston location pin further forward.

As the pistons and extensions are not threaded in these guns the location pin has to be further forward to mechinicaly join them.The location pin on all other types being at the bottom of the piston thread to arrest the possibility of the assembly becoming unscrewed.



Apart from this being possibly the only item that could be simplified in the process of Bren production it would also require a smaller in length and larger diameter location pin.

As no other Inglis Brens have this feature would it indicate these were the last Brens produced there ?

Quote Originally Posted by Peter Laidlericon View Post
Inglis were not allowed even the slightest variation from the drawing spec without specific Enfield/Ministry of Supply approval, even for the boxes, fittings and ancilliaries ets etc
Is there any known record of this modification/alteration Peter and if so is it dated ?

If the serial numbers on these guns are not random but run consecutivly in batch numbers of 9,999 is there room for 18,000 odd guns in between the known 0T and CH serial 7.92 guns in total WW2 production figures of 7.92's ?

As they don't have any inspection or acceptance marks on them would they count anyway ?

Appologies for so many questions but any thoughts , observations or further info much appreciated.

ATB Kevin