Please identify 1969 period rifle grenade set

This showed up at a small show today. It is complete in a capped cardboard tube marked, "PRAC (INT-F) / RFL -- 40 / N / AA? 69.

The grenade body has the same markings as the shipping/carrying tube. With the grenade is a plastic packaged blank / launching round and an odd plastic sight marked 100, 150 and 200 yards. The sight has a circular cross section notch that must fit the rifle some how.

Is the N marking indicated Naval issue? I take the 69 to be a year date.

What does the sight fit? M16 or SA80 rifles? Where does it fit?

Is the grenade anti tank, anti personnel or ? Thank you.

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Not for a M16.

Fal related perhaps?

Belgian...here's a page of info to check out. belgian rfl 40 n rifle grenade - Google Search

And here... Search the Collections | Canadian War Museum

Here's the frag version... Belgian MECAR 40mm FRG-RFL-40 Grenade - $0.00 : Buymilsurp.com, Your source for military surplus.

Thank you. I failed to mention that the cartridge is 5.56mm Nato. How and what the odd sight fits is a puzzle.

That will clip on the rear sight, just can't find a picture of the rifle to explain...then use the aperture for the front sight. You know you'd do it by eyeball and estimate though, after firing a few...

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Originally Posted by browningautorifle

That will clip on the rear sight, just can't find a picture of the rifle to explain...then use the aperture for the front sight. You know you'd do it by eyeball and estimate though, after firing a few...

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Which rifle? Thanks, p.

That's the thing, they used to use the FNC but I don't see where it would clip on either. They use the 4500 SCAR-L apparently now...it's got a rail top. I looked at them but now evident place to attach. That's the sight though, seems to come with each grenade...

The navy had rifle grenades? I know it's possible, but ...

The SA80 wasn't issued in 1969. Not seen until 1985.
That little fellow appears to be of Belgian descent and is a variation of their 40mm Anti-tank rifle grenade that could be fired from any .223 rifle with a 22mm launcher. An FNC, for example.
Net search 'arp-rfl-40' for a whole bunch of sites with pictures.
What's the head stamp on the grenade cartridge?
http://www.encyclo.co.uk/meaning-of-Arp-Rfl-40%20N

The white MA logo is MECAR as I recall. It took many years and tears for the military to finally sink in that you'\d never get enough dynamite into a 556 cartridge to hurl an effective rifle anti-vehicle or AP frag grenade a useful distance. The same knowledge would have also come from a 2nd year school physics student for free. After that they extended the efforts by firing a live bullet into a bullet trap grenade - with spectacular results. Alas, not spectacular for several firers including one of my friends, an SASC Major, who was demonstrating one when it exploded on the end of the rifle. Nor indeed to several of the observers as I understand.

Best stick to UGL's I say. If it ainlt broke, don't fix it

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Originally Posted by Sunray

The SA80 wasn't issued in 1969. Not seen until 1985.
That little fellow appears to be of Belgian descent and is a variation of their 40mm Anti-tank rifle grenade that could be fired from any .223 rifle with a 22mm launcher. An FNC, for example.
Net search 'arp-rfl-40' for a whole bunch of sites with pictures.

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You'd learn more if you didn't use ignore. All talked about already.

I now believe the N has nothing to do with British Navy. I just asked it as a question as it was there. No broad arrows anywhere.

Cartridge headstamp is F N 68.

Attached are pictures of the plastic/metal snap on sight. I have seen a photo of a similar sight attached to the grenade. But this one does not fit on the grenade.

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What rifle does it fit?

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Originally Posted by breakeyp

I now believe the N has nothing to do with British Navy.

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I never did believe that with this grenade...