Help Stripped Screw trying to remove Base from TA33R-8 mount.


March 2, 2009, 10:30 PM
Help, I really am having a big problem. Iwas trying to install a LaRue mount onto my TA33R-8 and in the process of trying to remove the bolt with an allen wrench form the mount that the TA33R-8 comes with, it seems I stripped it. Itried and tried and it woudl not budge. It seems like its glued no there. I was told it was suppose to be very easy to remove it, but it won't budge. After several attempts of removing the Trijicon mount, the screw seems to be stripped. Iam in agony. What can I do to remove this screw so I can put in my LaRue mount? Now that I stripped the screw, is my only hope to send this to Trijicon for them to install the mount? Or maybe should I try sending it to LaRue? I guess I made the mistake of constantly trying to remove the screw. I cannot believe it wold not come out. :banghead::banghead::banghead::banghead:

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Zak Smith
March 2, 2009, 10:50 PM
I believe the TA33 has helicoils for threads-- my TA31/11's have in any case. If these back out it's not the end of the world-- you can have new helicoils installed (you can do it yourself if you find the right tool). If the person who installed it originally loc-tited it, that might be what happened.

In any case, I would suggest taking it to a gun-friendly local machinist to take care of.

Alternatively, I believe Trijicon is pretty good about taking care of people if this type of thing happens - even though it's not their fault.

Also: always use the right tool for the job, and follow instructions. :)

March 2, 2009, 10:55 PM
Hi Zak... THe problem is not the Acog itself, but the mount that comes with it.. I was using what I believe is the proper tool.. It is a allen-wrench style screw andI used an allen wrench that was a perfect size but it woudl not budge, it felt like it is was screwed in tight as a rock.

I guess I must have not followeed instructions or perhaps mistaken the screw that appeared to fit my allen wrench perfectly. Its true I could have made a mistake.

You see my Acog has the mount in the picture.. It has a screw underneath it that looks like it is to be removed with allen wrench. Really, I am not sure if we are talking about the same thing. Maybe I will have to take a picture of it for you and show u myself. Then again I can be wrong and perhaps removing the screw wasnt what I was suppose to do? :confused:

The problem is at the bottom where the TA60 mount connects to the TA33R-8 Acog. There is a screw has an allen wrench hole that is attached to the ACOG through the mount. The screw points into the ACOG. I tried removing it counterclockwise and it felt like a perfect fit, but it would not budge.

Zak Smith
March 2, 2009, 10:58 PM
We are talking about the same thing.

If it was loc-tited and even if it hadn't stripped, there is the possibility of unscrewing the helicoil. It is something that may be relevant to the disassembly and assembly you want to do.

March 2, 2009, 11:00 PM
So you are saying I can still remove the mount? Where is the helicoil? I am going to bust out my Trijicon manual now.. Gosh I thought this wuold be really simple.. Silly me. :banghead::banghead: What is the best way then to remove the TA60 mount from the ACOG, assuming I can still do it?

I just read my manual.. and it says to use 1/8 inch hex wrench to unscrew it. That is exactly what I did.. It seems I have followed the instructions, but the screw was so tight it just would not come out.. Don't know what else I was suppose to do?

March 2, 2009, 11:18 PM
Anybody in Vancouver, WA area with a dremmel handy! :banghead::banghead:

March 2, 2009, 11:31 PM
its locktited in their. you need a little heat to brake down the locktite. 3-350 is more than hot enough for this. dont start drilling or dremiling either. rap some tin foil around your allen wrench to make up what you tour up. get the allen screw in ? hot and try again. what ever you do dont drill, if you have a machine shop then i take that back. other wise go to a gun smith

March 2, 2009, 11:33 PM
a little bottle of gas at wallmart will do just fine. carefull of any wood on your gun. heat gun should work to. you have rounded the inside of the screw in ? am i right? iv learned alot from the live steam hobby and the old tool-n-die men that are still with us. one of the best things they taught me was this. when messen with small screws ,bolts especially when made of brass. its best to give them just the slightest rap from a hammer and squared punch before removing. i dont no why but it works

March 2, 2009, 11:39 PM
Yeah the screw was in there so tight I worked so hard to unscrew it with the hex wrench that it essentially stripped it circular. :banghead: Oh man.. I really screwed up.. I just want to get that screw out of there. I was trying to install my LaRue mount. It was a piece of cake for my AIMPoint, but this ACog is a nightmare.. Yeah , this Acog is not cheap.. So, you think that a gunsmith will be able to remove the screw from the base? If anyone wants I can try to poast a pic.. but I don't know if I can upload pics to this site. Its just the TA60 mount that comes with the TA33R-8. There is one screw at the bottom of the mount.

The ACOG and mount are seperated from the gun.. All, I am trying to do is seperate the mount from the ACOG, not the ACOG from the gun.

I am told if you dremmel a slot into the screw you can then use a flathead screw driver to remove. I have no problem giving a gunsmith or someone like $5 or $10 to get this thing out.

March 2, 2009, 11:50 PM
your just going to make a bigger mess trying to slot it. stick it in your oven for 1/2 hour if your sure theirs nothing that going to melt like plastic and give the tin foil a try other wise head for a gun smith or a friend that works in a machine shop. PS tell who ever that you think its locktited in their. they will take it from their

March 2, 2009, 11:55 PM
Ok, baking or heating my tritium filled ACOG in the oven is out of the question. I guess I will head to the gunsmith or send it back to Trijicon and hope they can remove it. Yeah in the directions it says remove with 1/8 hex screwdriver, but be careful not to strip it, because its in tight. LOL.. Yeah right. I had no way to get that thing out. IMHO.. I think whoever screwed the thing in at Trijicon, made the thing way way too tight.

Zak Smith
March 2, 2009, 11:58 PM
While I stand by my original advice in post #2, I would like to add that if you need to remove a loc-tited fastener from an object which is otherwise sensitive to heat, simply put the (clean) tip of a soldering iron on the heat the fastener until the loctite melts. Then loosen as normal.

No need t use a heat gun or put anything in the toaster.

March 3, 2009, 12:20 AM
now thats the kind of info i like ZAK hope i wasn't stepping on your toes

March 3, 2009, 12:22 AM
I called Trijicon on my TA33; they said it was secured with red (high strength) loc-tite. I VERY carefully applied moderate heat to the screw head with a propane torch and the screw came out fairly easily. As I remember Trijicon stated that they would remove buggered screws if necessary. It sounded like this is not an uncommon experience. I certainly wouldn't get heavy-handed on a $800+ optic.

When I replaced the screws on this and another ACOG I used blue (medium strength) loc-tite instead of the red.

March 3, 2009, 12:56 AM
While I stand by my original advice in post #2,

Sorry Zak.. I guess I am a bit confused on your original advice. I really am new to rifles and optics, also I am not hardware saavy, so I am not quite sure about all the technical terms you used like helicoils for threads or loc-tited. All I did was follow the instructions of the manual, but that seemed to have put me in this mess to begin with. I just kept trying to remove it with the 1/8 in allen wrench until it became badly stripped.

So, what I like to know is I am not dead right? Stripping the screw doesn't mean I have to throw away my $800 optic?

It seems from the posts, there is some solutions. Really, when it comes to torching, applying heat, or performing any other alterations involving power tools to this litle screw, I better pass. So, would going to gunsmith or sending to Trijicon to remedy be the best solution? I am just hoping that I didn't screw up my $800 optic for life, thats my main fear. I guess it will suck that I have to pay to get the screw out of it, but its not the end of the world.

Yeah, for now on, I wll do research before I attempt to remove a screw from a optic, gun, or whatever. Gee.. I never realized it woudl be this tricky.

Zak Smith
March 3, 2009, 01:01 AM
I meant this part in specific:

In any case, I would suggest taking it to a gun-friendly local machinist to take care of.

Alternatively, I believe Trijicon is pretty good about taking care of people if this type of thing happens - even though it's not their fault.

I've done similar things before (like gotten a scope mount stuck on a $5000 rifle)-- live and learn.

A heli-coil is a steel threaded insert which is typically used when a harder machine screw needs to go into a softer metal, or when the original threaded hole is stripped (like an engine drain bolt hole).

March 3, 2009, 01:04 AM
your allright. take it to a gunsmith. leave it come back in a few days thats all. i dont see how you could of wrecked it. the smith will be faster than mailing it in. thats the only reason i say a smith. FACT you aint the only one to strip that screw i guaranty it. PS what type of gun are you working on? just wondering

March 3, 2009, 01:15 AM
Well thanks for all your good advice and comforting me .. Gosh I am frantic.. Being new with guns is hard enough.. Yeah, I think a gumsmith is the way to go. I know a local guy who can probably deal with this, hope he won't charge me an arm and a leg.

PS what type of gun are you working on? just wondering

Well I am trying to install a LaRue LT105 mount onto my TA33R-8. This optic is to be used on my Rock River Tactical Carbine A4 and my DPMS Sportical 5.56. I also have an AIMPoint Micro which will be mainly used on the sportical. I may switch them around depending on what type of shooting I am doing. I am thinking until I can afford a larger scope, I will also use the TA33R-8 on my DPMS LR-308. However, the one thing I worry about that is it is calibrated for .223, not .308. So, perhaps that won't work.

Zak Smith
March 3, 2009, 01:16 AM
It'll work fine; your hold points beyond 250 will just be a little different, is all. I shoot a TA11 calibrated for 55gr on my 17" shooting 75's-- which is similar to .308 in trajectory.

March 3, 2009, 01:21 AM
good luck Friend. its an easy fix for a machinist or smith so dont have any nightmares over it. i dont have clue a bought calibrated scopes. ill leave that to zak

March 3, 2009, 01:25 AM
Thanks for the information and help guys, I appreciate your wisdom. I will let you know how it works out with the gunsmith.

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