Unknown Enfield marked muzzle attachment

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Originally Posted by Peter Laidler

the actual barrel part of the L7

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Just a contoured blank and not very fancy without attachments...

That's right Jim, just the contoured blank. We came across a similar conundrum with the minigun trials. Barrels on a gun firing 60 rounds per second............ But a new set of barrels was so cheap there was just no point in suggesting any fancy longer lasting material

Sometimes people get so focused on the Holy Grail, they forget to remeber, “ oh, yeah, I can still drink from a regular tin cup”. 🤪

There was a "rumour' doing the rounds that Mini-Gun barrels had stellite liners.

When I got to unwrap a bunch of "new old stock" barrels a few years ago, I noticed several things.

ALL of them (several hundred) were made by Harrington and Richardson.

They were simply hard-chromed from end to end.

H & R had been "creative with the "tapered-bore" part of the spec. Yep! "tapered-bore". It's on the drawings. Something to do with the rifled bore still being in contact with the bullet as thermal expansion occurred? What H&R had done, instead of making and trying to use ludicrously long tapered reamers, was to "step-ream' the bores so that, at the "gauging points", the diameter would be correct.

These barrels are incredibly "skinny" BUT, even at a "gun" rate of six thousand per minute, that really works out to one hundred per second or about sixteen per second, per barrel. That is about the same cyclic rate of fire as a MG34 at max speed or an MG 42 on Valium. Many guns seem to have also been set to run at the "economy rate" of three thousand per minute. This is perfectly sufficient when you have four of them podded out the sides of a helicopter and you need to administer "attitude adjustment" to some miscreant.

With the barrels being whirled through the air at high speed, especially on an external aircraft mount, cooling would not seem to have been a problem.

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Originally Posted by Peter Laidler

Simple......... it is the fume extractor from the L8 and L37 et al tank derivatives of the GPMG. I seem to think that there was a small tube part in the kit that extended backwards to the gas block area and the venturi effect draughted the exhaust gasses forwards and out of the tank. The ex tankies here (jonnyC?) will tell you that the gas from the co-ax machine guns are more overpowering than the main armament. Mind you, they fire a lot more rounds than the main armt!!!!!!!

Tankie and Skippy.......?

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Pete, The L37 is the parallel Tube. The L8 was used on Chieftain, & had a 'Cone' shaped flash hider. With the extractor tube underneath. This tube had a round lug at the rear end. Which located on a shallow hole in the Gas block. To keep the Tube in position.


Hope that clarifies things Folks? ;) M.