North Carolina Sportsman
  • Home
  •  » 
  • Technical
  •  » 
  • Guns
  •  » 
  • New Mossberg 500 swivel bolt issue solved!

ScoutfishProfile Photo
Guns in North Carolina

New Mossberg 500 swivel bolt issue solved!

Okay, I admit that I'm feeling just a little extra proud of myself even though it wasn't a matter or rocket science or any other display of amazing human feat.

My Mossberg 500 that I just bought 2 weeks ago needed a sling. Not a problem right?

WRONG! My Mossberg has a big difference between the magazine end than the older ones> Instead of a cap that goes on the end of the magazine, it has a bolt instead. The bolt has a round head with ridges similar to the edge of a dime or quarter.

It stays on the barrle flage by means of a locking nut on the inside threads which thread into the hole in the end of an otherwise solid ended magazine. This bolt is pre tapped and threaded on the head for a swivel eye.

Am I saying this in a way that makes sense? The magazine does not use a standard cap, but a bolt threads into the end of the magazine. A swivel eye bolt then threads into the magazine bolt.

Well apparently, NOBODY carries a sling swivel set that threads into the bolt. Cannot buy just the eye bolt with machine threads, cannot buy a swivel with adaptor>

What I can buy is a whole new ' Uncle Mike's' bolt from Cheaper than dirt for $25.99 plus $12.00 shipping and handling. Plus waiting 3 or 4 weeks for it to arrive.

So here's what I did. Took the barrel off and carried to my local outfitter - who also does not have and cannot order a swivel for my gun - and looked at swivel sets.

WEll, a Winchester 1' swivel & stud set ( part #99740 - bolt action rifle) will work with small modification to the swivel bolt. No modification at all to the Mossberg.

The machine thread swivel bolt is 7/8' long. The Mossberg takes a 1/4' long bolt.

Solution: I cut the eye bolt down to a 1/4' , filed the threads smooth and burr free and

We are in buisness!

Again, no major gun smithing on my part and nothing requiring a degree in engineering....but I am proud I did not have to spend $38.00 when all I needed was a $1.47 eye bolt.

Okay, that's it! :)
February 02, 2013 at 10:09pm
Viperx4Profile Photo
Posted February 04, 2013 at 8:00am
Sharing Forum

Thanks for sharing that Scoutfish. That's the nice thing about this site. If you have a problem....ask because someone has had the same one before and will have an answer for you. This info will come in handy to someone.

•   View Reports by Viperx4
GobblintomProfile Photo
Posted February 04, 2013 at 8:48am
500 sling

Scoutfish, That's GREAT!! I know exactly what your talking about because I have had a newer 500 but I did find this gizmo to mount a sling but I think I still paid like $15 for it...Sounds like you DIY method was cheaper lol...Thanks

•   View Reports by Gobblintom
ScoutfishProfile Photo
Posted February 04, 2013 at 5:12pm
thread size

From what I could tell from looking at all the different 'Uncle Mike's ' kits, the thread size/type is standard between all the manufacturers.

Either you have a cap with machine thread or course wood threads and for stocks, they just have the course wood threads.

I could have bought a pack of 12 count 1/4' eye bolts, but it still would have cost $12.00 plus an additional $12.99 s&h.

I bought the quick dettach 1' swivels ( for bolt action rifle) , and eye bolts from WalMart for $5.99.

•   View Reports by Scoutfish
ScoutfishProfile Photo
Posted February 04, 2013 at 6:13pm
How does it mount?

Does that slide over the barrel or does it go between the magazine bolt head and barrel ring?

•   View Reports by Scoutfish
GobblintomProfile Photo
Posted February 04, 2013 at 6:46pm
Sling mount

You take the Cap off like your taking Gun apart and this gizmo goes on then you re-install the cap. It has little indentions so you can position it where you like and once you snug Cap back on it doesn't move.

•   View Reports by Gobblintom
ScoutfishProfile Photo
Posted February 04, 2013 at 7:09pm
Magazine bolt


Magazine bolt

Magazine cap 2


Magazine cap 2

No cap

Mine doesn't have a cap per se.

I have a bolt instead of the cap. Top of bolt is pre threaded for a swivel eye bolt.

Got a few photos of it after I shortened the bolt to 1/4' and installed it

•   View Reports by Scoutfish
GobblintomProfile Photo
Posted February 04, 2013 at 7:20pm
The Knob

Yeah that looks similar to the 500 I had the best I can recall...Isn't that Big knurled part the cap that holds gun together? What you have there doesn't look bad though...Nice work.

•   View Reports by Gobblintom
ScoutfishProfile Photo
Posted February 04, 2013 at 9:07pm


Yeah, that's it

I guess that when you say cap, I am picturing the old style Cap that screwed in over the magazine instead of threaded into the magazine.
Kinda like this one.

•   View Reports by Scoutfish
ScoutfishProfile Photo
Posted February 09, 2013 at 7:58pm
E-Mail from Mossberg

JUst got an e-mail from Mossberg about 30 minutes ago. They are shipping me an of charge.

•   View Reports by Scoutfish

Haven't registered with us yet? Register
Forgot your password? Recover Password

featured merchant

Santee Cooper Country
Santee Cooper Country Welcome to Santee Cooper Country. This commission was created by the South Carolina Legislature in 1968 and is the official regional tourism office promoting Berkeley, Calhoun, Clarendon, Orangeburg and Sumter Counties. We are governed by an 11 member boa

Calendar Of Events

We don't have any events listed at this time, but you can enter yours now!