Side Sling Adapter Question

[ST911]

If I'm not mistaken, the units with reversible bar are all aftermarket. Even when you put the GI swivel on the gov barrel, there is some play. If you put it on a LW barrel there's more but it's tolerable. I have some on 6520s and 6720s and they meet needs.

I wouldn't expect a shim to to stay in place.

Is this a question of how much play is still an ok fit?

[mrbieler]

If I'm not mistaken, the units with reversible bar are all aftermarket. Even when you put the GI swivel on the gov barrel, there is some play. If you put it on a LW barrel there's more but it's tolerable. I have some on 6520s and 6720s and they meet needs.

I wouldn't expect a shim to to stay in place.

Is this a question of how much play is still an ok fit?

I'm not getting a lot of good information either which is frustrating.

It looks like the M16A2/M4 version for a 0.750 barrel journal is part # 12991254.

The part # for the adapter assembly with the swivel looks to be #12598617 and the reversible "dog bone" to use on the A1 or A2 barrel appears to be part # 12598618 which is what was stamped on mine.

I one I picked up I was told was NOS USAF inventory / take off parts. The seller is taking it back and getting me one that will work on my 0.625 A1 barrel only.

[AndyLate]

They were M203 sling adapters before the M4 came along. The "dog bone" will fit either barrel diameter, I believe you need p/n 8448379 for the side where the swivel mounts. Not 100% on the part number, there are definitely 2 different ones though. Numrich used to sell them but it's been a while.

TOS EE has a guy selling 10 - .625 side sling adapters. No affiliation, not a member of the site so I cannot even tell you a user name.



Andy

[mrbieler]

That's the seller I was working with. Didn't want to call anyone out with out getting more info and trying to resolve things first.

We did an exchange and I got the M16A1 stand alone which worked fine. He's traveling for work and will get back to me when he returns and trie s to figure out why the dual a1/a2 adapter didn't work. It looks like the one on the left above. My assumption is that the dog bone is out of spec, but that's just spit balling.

[markm]

Wow. A lot of side sling info.

[mrbieler]

After playing with a few of the A1 adapters, they are not as tight as the A2 version. The A2 locks into place pretty solid. The A1 has a tiny bit of movement forward and back but doesn’t rotate. 3 different ones on four different barrels had the same results.

[mrbieler]

And yes, this is more than I thought I’d ever post about side sling adapters…