MAG58/240 guru's...what the hell is this?

[03humpalot]

Gents,
i just recieved an (appears to be new/test fired only) 240 barrel in for a project i have going on and upon inspection the gas regulator is a 1 position affair. Im used to the three position adjustable regulator and have not seen one of these before.

A little digging around online and there appears to be a brit version of the mag with a single position regulator for use on tanks so im wondering if thats what i have here.

If anyone knows what the hell this is please let me know. Thanks in advance.






Apologize for the shitty batcave pics.

[SgtStrykerUSMC43]

Any markings on the barrel?

[03humpalot]

Roger,
7.62mm

At top dead center is the following
M P (Magnetic particle inspected i presume)

A24 7 01 12597036

bottom of barrel towards chamber is 630

Right side of gasblock has a strange symbol and 8 and 1 markings

flash supressor has a bunch of numbers which are mirred on the rear side of the barrel changing handle

[03humpalot]

Also of note the front sight retaining strap works opposite of U.S. weapons...IE; it locks and secures the front sight towards the muzzle vs the other way around.

When i get back to work on monday i can compare it to a bunch of 240 barrels but am hoping someone on here knows whats up.

[03humpalot]

I stand corrected on the front sight issue...someone installled it backwards.

[SgtStrykerUSMC43]

Roger,
7.62mm

At top dead center is the following
M P (Magnetic particle inspected i presume)

A24 7 01 12597036

bottom of barrel towards chamber is 630

Right side of gasblock has a strange symbol and 8 and 1 markings

flash supressor has a bunch of numbers which are mirred on the rear side of the barrel changing handle

That symbol look like an arrow, or an antler, or?

[03humpalot]

Sgt Stryker

Its not very clear but could possibly be an M

[SgtStrykerUSMC43]

That thing looks like an early MAG-58G barrel to me. Can you take a picture of the handle?

And there should be a proof mark on that thing somewhere near the breech.

[03humpalot]

Proof mark, just found a "V" stamped towards the breech?
Handle as requested

[SgtStrykerUSMC43]

Okay,

I was incorrect on the designation. It's an M240G barrel assembly. Here's a visual for confirmation.