Instead of welding.....

[M60joe]

Here is a nice fix as apposed to welding on a receiver

Hammer pin holes very egg shaped do to years of shooting and the holes were actually off location as well. Repaired by inserting hardened steel bushings. Same method can be done to convert the large pin to the small pin receivers. (would have to pin the bushings in place since the ID and the OD wouldn't be concentric)

 

[subgunner]

Are the bushings a press fit in the receiver?

 

[M60joe]

Press fit and lock-tite in.

 

[Vegas SMG]

Same method can be done to convert the large pin to the small pin receivers. (would have to pin the bushings in place since the ID and the OD wouldn't be concentric)

I've wondered about sleeving the front take down pin holes for several years. Let me know when you've done a couple, (I'd rather not be the first one on the block for this), post a couple of photos and hit me with a price. I'm VERY interested!

 

[subgunner]

I've wondered about sleeving the front take down pin holes for several years. Let me know when you've done a couple, (I'd rather not be the first one on the block for this), post a couple of photos and hit me with a price. I'm VERY interested!

I didn't know you had an SP-1. Are you going to shoot it in the next match?

 

[Brian Ski]

Press fit and lock-tite in.

Sounds like a good idea but I have found that carb cleaner and other cleaners will disolve locktite... Just an fyi.... So it is something to keep an eye on....

 

[Vegas SMG]

I didn't know you had an SP-1. Are you going to shoot it in the next match?

I've actually got a Colt AR15A2 HBAR marked lower along with the original 20" HBAR upper. It was manufactured just weeks prior to the '86 ban and still retains the typical large hole, slabside features of a SP-1 Colt including a SPXXXXXX serial number.

Yeah, we don't get to bring the big guns out very much so I'll probably shoot it next weekend. I'll be in Indiana next month, so this is my last Las Vegas match before our summer break.

 

[M60joe]

I've wondered about sleeving the front take down pin holes for several years. Let me know when you've done a couple, (I'd rather not be the first one on the block for this), post a couple of photos and hit me with a price. I'm VERY interested!

I'll have better pics this weekend.

Transferable converted RR with 7075 Aluminum Bushings installed to accept small pin receivers. Bushings CNC'ed to the correct diameter after the bushings were pinned in place. Baked on flat black moly finish.

 

[Tom Roark]

Man, that is beautiful work on that EA receiver. Can you quote me a price ? I also have this receiver, a Norell conversion, and in the interim, have installed a KNS Precision pin lock set.

 

[Vegas SMG]

Joe, can the pins be installed from the top of the receiver so they aren't visable when an upper is installed, or do they protrude all the way through?

 

[subgunner]

Joe, can the pins be installed from the top of the receiver so they aren't visable when an upper is installed, or do they protrude all the way through?

If the hole for the pins did not go all the way thru the receiver you wouldn't be able to remove them. Since an AR has pins all over the place I'd live with a few more so I could replace the bushings if needed.

 

[M60joe]

Joe, can the pins be installed from the top of the receiver so they aren't visible when an upper is installed, or do they protrude all the way through?

Like subgunner said, you can't push the pins out unless the pin hole is thru. I can only drill and ream from the top but then the bushings would have to be machined out.


Tom Roark
I'm out of town posting this. I'll PM you Sun eve.

 

[Vegas SMG]

Or I could leave well enough alone and continue to use a five dollar off-set pin. It's not that difficult for me to continue to "deal with" two minute upper changes rather than a 20 second swap. OR, I could just buy a few more large hole uppers but I'm a cheap bastard. As you well know, it's not nearly as big a deal as some would have you believe.

 

[subgunner]

It's not that difficult for me to continue to "deal with" two minute upper changes rather than a 20 second swap. it's not nearly as big a deal as some would have you believe.

Especially, if you never shoot the gun or change the uppers!LOL
It does help the value if you want to sell in my opinion. YMMV.

 

[Vegas SMG]

You owned an SP1 conversion for how long? You know it's not that big a deal to swap uppers. Looks like Mike Klos is no longer doing his reweld / redrills on the front take down pins so this may well be the only option available for now. I've done a fair amount of business with Joe and he's a stand up guy with a great reputation. I'm just a bit cautious about adding more holes to my RR. I may eventually take the route you recently did and upgrade to the "real" deal.
http://www.subguns.com/boards/inquiry.cgi?read=38544

 

[subgunner]

Unfortunate, Mike does seem to be MIA at the moment.

While I agree the offset pin is not that big of a deal when I had the SP-1 I invested in large hole uppers. I had several flattops from Daniel Defense ( Les Baer manufactured)
and a few Colt large hole. So I wasn't messing with an offset pin.

In anticipation of getting the LM-7 and AM15 uppers I decided I wanted a Milspec gun.

After selling the Colt SP-1 and buying an Oly I wasn't entirely happy with the Olympic M16. Luckily I turned a profit on the sale of the Colt and Oly. That gave me the funds needed to buy a factory Colt M16.

It's not a slabside, like the SP-1, and is marked M16. With a modern upper it will look like current issue. That gives me a grin.

 

[M60joe]

Large pin SBR (pic below) that was welded incorrectly by someone (do not know who did it). Porosity and soft. I re welded it for a customer but in my opinion, welding should be the last resort. Why alter the receiver heat treat for cosmetics....

The bushings can be installed with long enough pins that can be machined/finished flush with the receiver so you can't even see the pin holes. All depends on what a guy wants to spend on it...

 

[Vegas SMG]

That's one of the ugliest things I've seen in a looong time. :jaw_drop

 

[tony k]

That's one of the ugliest things I've seen in a looong time. :jaw_drop

Nah, that's not ugly.
This is ugly!