Don’t know how many there were but they were penned on with a permanent marker (which ran in the rain lol). They made a stencil for SS, Brimstone and PWIV. They even made a stencil for a Typhoon cockpit in the shape of ‘highlight’ which I destroyed when I gave permission to a pilot to throttle up on the EOR (it’s a long story).

The typhoon only carried EPWII and had nicely cut spandex stickers which Coningsby Paint Shops produced. The Silhouette used came from a presentation by TTF and a template used to position them in the same place every time on every aircraft.

That’s a shame, I’ve made safe a few relics by drilling the chamber to remove the powder of live rounds. All done in a safe environment (I am an Armourer and EOD operator) so no warnings required.

Peter Laidler at the SASC collection had the powder from a live round found in a Lee Enfield (from the sunken Lancastria) tested and it was found to be as good as when it was produced!!

Do you have any more photos? Any of the whole gun or section of?

I know this thread is now a year old but for what it’s worth, the broad arrow mark is actually a 10% check marking meaning that the item is one of the 10% of that item inspected and gauged. The other 90% only received a casual inspection.

You would need to check the rear dust cover behind the top cover for the serial number. The BSA logo appears to be on the barrel extension so is no indication that the gun is BSA, many parts were mixed up by the armourers as they never really matched parts.

If you find and VSM marks that would indicate Vickers Sons and Maxim, SD would indicate Standard Motors and B would indicate BSA. The BSA piled arms logo was dispensed with in 1940 as a frill.

Top gun is either an earlier gun with the pintles removed or is a gun that was an Intermediate i.e. a gun that was on the production line as the spec change was introduced.

The bottom gun is the later gun with out the pintles from the production line. You will also note that there is less machining in the same area which meant less tooling and less time required per gun.

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The spring isn’t a spring, it’s a hard mounting. The wedge is part of the trunnion and formed when the milling tool finishes it’s cut, the photo appears to show a flat surface but it is curved which follows the profile of the cutter. The ‘What’s this’ part I think is just a lightening hole.

Hopefully these pics of a .30 ANM2 may help, there a little different to the MkII 303

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I only know of 2 versions, the earlier type with the 2 round posts (1 each side) behind the thread protector and the later type with the rectangular blocks where the post have been omitted.

If I understand what your asking then yes, what you are seeing is the barrel through the hole. The barrel is tapered, but until I get home in a month or so I can’t get you the dimensions.