What is this weird mystery rifle?

FWIW, I have yet to definitively figure that one out...

It's being used by Brazilian police, aparrently.

Click to expand...

I suspect it's more likely to be something captured on a raid rather than something standard issue for the police. I seems to be homemade and probably contains several pieces from different rifles (certainly several design features from other rifles are there). Hard to know about the full operating mechanism without being able to inspect it.

From the way the officer is holding it and the fact he has his duty FAL slung over his shoulder, I'd say that weapon was confiscated by the police

Weird, looks like someone tried to create a homemade version of a Sig 551

I want it.

its a sig 540.. or atleast a copy of one

I think its the 7.62 NATO version of the IMBEL Ia2, which is slated to be Brazil's new rifle, but I think they will be adopting the 5.56 version. I think some elite units started getting them last year.

I dunno...but I wouldn't be surprised if there were a very nervous SIG 551 somewhere out there and an IMBEL MD-97 that had to visit relatives out of state for a few months...

if thats 30 cal then it would make it a SIG 542, the .308 version of the 540

notice the groove near the front of the magazine, the ridge on the back of it, the lightening cuts above the magwell, the angle of the front under the front hinge, the dip in the bottom of the lower receiver above the pistol grip, the cut in the upper receiver for the bolt carrier handle

its a sig 540/542 with probably a fabricated grip and forearm.. judging by how much more the rear of the receiver extends behind the pistol grip on the one in the lower photo (the 30 caliber 542), my money would go on the SIG 542

I thought it might be a SIG . The bolt/handle arrangement is a dead ringer for my Beretta AR70, and that rifle is basically a clone/sister of the SIG 55X rifles. I don't suppose any Brazilian or S. African companies make a similar rifle? Cool folding stock, btw; me wants.

That's the funkiest censoring I've ever seen; grass?

TCB

If that's a 7.62x51 magazine then the guy holding the rifle has hands like Andre the Giant. Also someone must have decided to make the only curved 7.62 NATO magazine ever, plus the FAL he's got slung must be chambered in .338 Lapua.

Whatever that thing is, its not a 540 series, it appears to be all milled rather than stamped, including the trigger. The receiver also appears to be too deep for a 540 series.

I'm gonna go with what's already been proposed, a confiscated, homemade frankengun.

i thought maybe an AR70 as well, but the shape of the bottom surface of the receiver is way off.. however, the line where the two receivers meet do look closer to the AR70, the area around the magwell looks nothing like that of the AR70.. i noticed the bolt handle was off, but someone could have ground it smooth and drilled and tapped the bolt carrier for that style of bolt handle

that said, there are some other things that dont add up to either one.. the trigger guard shape and the cover over the mag release lever doesnt match either one, the forearm is completely different.. the bolt handle and trigger guard could have been modifications

but what really throws me the curve ball is that the lower half of the lower receiver looks just like the sig 540, the upper half of the lower receiver where the two join looks like an AR70.. the gas block doesnt look like that of the 540 though.. very close, but not quite

Is that bakelite and a cheap spot-welded receiver?

It doesn't have anything close to a Sig 542 trigger, at least as it appears on the outside. Looks to be like an AR-70 to me.

look at the shape of the receiver around the AR70 magwell

It carries both similarities and differences with the AR-70 and the SIG-542. It's probably some homemade that uses parts from a couple rifles. The article states that it was indeed taken during a raid. :/

Most definitely not a SIG 540/542. And although it may share some design elements that are similar, there are way too many design differences to be a simple knock-off.

The upper/lower mating line is different. <---- this is a big tell
Trigger/trigger guard/mag release are all different.
The side of the upper (and bolt carrier) is vertical, instead of slanting in toward the top.
Cross pins in the lower are in different locations.

There are also too many of the same kind of differences to be an AR70 variant.

I’m going with ... unreleased prototype.

Is that a Dawoo? With a different forend maybe?

To me, the receiver has much in common with the beretta ar 70

To me, the receiver has much in common with the beretta ar 70
http://www.imfdb.org/wiki/File:SC223.jpg

Im not sure but I think its the original FN rifle that the Bofors in sweden made into the: AK5. Its the swedish military assault weapon in cal 223, wich replaced the G3 .308w.

AK5 swedish

Here is the AK5 Swedish

The original version was built by FN (fabriq national, belgium) on the 80's.