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paradox
01-10-2007, 7:58 PM
DIY: Bedding a Colt style Hakko scope to an A1/A2 carry handle

Mods, feel free to move this thread when the home gunsmithing section is made (hint, hint)

Here is how I bedded a 4x Hakko scope I got from CDNN: http://www.cdnninvestments.com/ar4xbdcscwha1.html These are copies of the original Colt style scope for A1 and A2 style ARs made by the same company that fulfilled the later years of the military contract. These are great little scopes with clear glass and the ability to use the iron sights while the scope is mounted.

The biggest problem with these scopes is the interface between the carry handle and the scope is never perfect, thus things shift under recoil or after removal and reattachment. Not a good thing for a sighting device. The solution: bed it like a precision rifle.

Note: these are okie instructions. If you don’t have a shed full of stuff, you might be better off buying a bedding kit from brownells.


Materials:
* Devcon “Plastic Steel Epoxy” bought at the local hardware store
* clean popsicle sticks for stirring and spreading the epoxy
* disposable cup for mixing the epoxy (I used a small, used, Glad container ‘cause that’s what I had)
* clay or playdough
* Carnauba car wax
* grease
* Pam nonstick cooking spray
* masking tape
* sandpaper
* solvent (I used acetone)
* disposable gloves
* rags

http://img409.imageshack.us/img409/4961/scopebedmaterialsyl8.jpg



Method:
1. Wax down the upper and the attachment nut/tensioner with the carnauba wax. I put on a good three coats. This is the bottom layer of your release agent. If you lazy out and leave voids, there will be much cursing and pounding to pay for your sloppy work. Like all surface coating jobs, prep work is the key to success.

2. Slap some grease on the threads of the post and on the attachment nut/tensioner. Wax can get pushed out of the threads, letting epoxy in. Grease keeps everything from sticking.

3. Tape the hell out of everything except the channel of the carry handle and the trough of the Scope’s mounting bracket. Tape is cheap. It doesn’t take that long to apply or remove masking tape; the same can’t be said for epoxy.

http://img406.imageshack.us/img406/8974/scopebeddingtapedupvz0.jpg

4. Put the clay or playdough in the trough of the carry handle in front and behind where the scope base sits. This acts like a dam, preventing any epoxy from getting to the sights or oozing way out front.

http://img409.imageshack.us/img409/686/scopebeddingtapeandclaywk1.jpg

5. Spray Pam on the carry handle. This is a second layer of release agent. You just might get away with only Pam or only wax, the paranoid uses both :D

6. Sand the aluminum scope mounting bracket so we get good adhesion. Then wipe it down with solvent. Q-Tips work great for this.

7. Mix epoxy and apply to bracket with the popsicle stick. Use a couple sticks, leave one with the rounded end, cut one off square with a knife, and cut a third off at a forty-five degree angle. This gives you good tools to scrape and slather the epoxy.

8. Put the scope on and crank down the nut/tensioner until the scope is firmly down but not over tensioned.

9. Dry overnight and pray your prep skills were worthy.

paradox
01-10-2007, 8:00 PM
10. Tap scope off using a brass punch on the screw and a brass or plastic hammer lightly against the mounting bracket where it screws into the scope tube. If you did your prep work properly, the scope should pop out.

http://img144.imageshack.us/img144/5566/scopebeddingpoppedoffas4.jpg

11. Sand off any excess epoxy fore and aft on the scope base and pretty things up. Don’t touch any mating surfaces.

12. Pull off all the tape and clean all the crap you had to put on to keep the epoxy from sticking.


Now you have a scope that fits your upper like a glove.


http://img441.imageshack.us/img441/289/scopebeddingfinishedbactu7.jpg

http://img406.imageshack.us/img406/3573/scopebeddingfinishedfroua8.jpg

SemiAutoSam
01-10-2007, 8:36 PM
Please forgive my ignorance but what does this do exactly?

and is it really required ?

PS/ Are you at all near the narrow gauge railway in Tuolumne

paradox
01-10-2007, 8:49 PM
Please forgive my ignorance but what does this do exactly?

and is it really required ?

This makes the scope and the carry handle mate like they were made for each other. Unless you do this, the scope will shift around while mounted, resulting is a moving POI. If you’re using the scope on anything other than an airsoft rifle, yes bedding is required.

PS/ Are you at all near the narrow gauge railway in Tuolumne

Close enough to bike to. Actually, I bet I could walk there and back from my home while the sun was up.

SemiAutoSam
01-10-2007, 9:00 PM
Cool thats good to know I guess now I need to get a good scope I have been looking at one on the CDNN or CDDN website 50-60 bucks from memory.

I lived on that NGRR property for a while in the capacity of a caretaker. You wouldn't believe how the locals vandalised it or attempted to

This website tells about the area, It was a blast being in control of the locomotives there were a few of them there when I lived there, I'm note sure how many survived.



http://www.wsrestoration.com/


This makes the scope and the carry handle mate like they were made for each other. Unless you do this, the scope will shift around while mounted, resulting is a moving POI. If you’re using the scope on anything other than an airsoft rifle, yes bedding is required.



Close enough to bike to. Actually, I bet I could walk there and back from my home while the sun was up.

paradox
01-10-2007, 9:20 PM
Cool thats good to know I guess now I need to get a good scope I have been looking at one on the CDNN or CDDN website 50-60 bucks from memory.

I lived on that NGRR property for a while in the capacity of a caretaker. You wouldn't believe how the locals vandalised it or attempted to

This website tells about the area, It was a blast being in control of the locomotives there were a few of them there when I lived there, I'm note sure how many survived.

http://www.wsrestoration.com/



Yeah, I'm fairly close to West Side. The local Indian tribe bought that property and have Board of Supervisor approval to build a golf course there. I bet within a decade, the trains are running once again from the valley. Instead of hauling logs down, they’ll be hauling gambling addicts up.

SemiAutoSam
01-10-2007, 9:26 PM
I will bet all of the tea in china that they have plans to build a casino on that land.

I had heard about them taking over. I have a feeling they care nothing about the lands history.



Yeah, I'm fairly close to West Side. The local Indian tribe bought that property and have Board of Supervisor approval to build a golf course there. I bet within a decade, the trains are running once again from the valley. Instead of hauling logs down, they’ll be hauling gambling addicts up.

paradox
01-11-2007, 6:14 AM
I will bet all of the tea in china that they have plans to build a casino on that land.

I had heard about them taking over. I have a feeling they care nothing about the lands history.

The tribe already runs a Casino in Tuolumne township: http://www.blackoakcasino.com/. That’s how they were able to afford the westside property. When done, the westside project will have the golf course, and perhaps a hotel. Now, old folks are bussed in from the valley, but I imagine train service is on the planning board.

And truthfully, the tribe cares more about Tuolumne township and that area of land in general much more than Art Bell or anyone else for that matter.