Will M Carbo install the integrated Tool-less locking pin for me?

Hey guys, so I ordered the KEL-TEC SUB-2000 M series Integrated Tool-Less Locking Pin for Aftermarket Charging Handles for my m-series and man does this look like a PITA. I’ve also read a LOT about it being a PITA to install so I was wondering what the process would be like for me to mail it to M carbo to install for me? I just don’t want to mess with it if I’m being completely honest lmao

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@Jksoli2019 Yes you can but with all the info on this site available you can install in a few minutes. We’ve made all the mistakes and shown the cures.

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ok i’ll do some more research. thank you for the help!

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The easiest way I found to do it was to have someone help you. A lot easier if one compresses the spring while the other hooks the pin. I tried it by myself and after a while I started talking in tongues. My wife thought I was possessed. Went over to my brother in law and had it done in less than 5 minutes.
Good luck.

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@Pviscald Thats what I did. Fiddled by myself for way too long. A friend came by & pulled down & we installed in a few seconds.

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You can do it easy yourself. This is a method posted by @tinktrain1 that I used to get mine on and it only took a couple minutes and is super easy on the hands.

“Got mine today these a very easy way to clamp the spring down, remember a spring will act like a bolt, put the supplied allen key between the 2 parts like Chris said grab the spring and spin it round and round. because the allen key is held in place the spring will slide past the allen key tightening as it passes it. its that easy. no fuss no muss. I was able to get over 1/2 space between the spring and the pin with little to no effort. No tools needed!!! Then pop in the new part and twist the other way less than 1 minute complete time spent…”

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There have also been some problems with twisting the spring hook ends from the clamp and twist method. I have built a couple of simple devices that I use to install. They both use use spring compression. One takes a bit of hand strength the other takes near zero hand strength, both can install the pin in under 60 seconds.
I will put the replacement part in your spring free. Just mail me your spring and new integrated end and I will mail the spring with the new part installed back to you. And of course return the old end. Do t want more old ends lying about :grin:
PM for my address.

Jim

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Kudos to @Oneof6 ! I took him up on his offer last year and he was so cool about it. I like that about this community… people always willing to help out in one way or another. Thank you again James!!! :+1::us:

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I’m in the same boat. 65 with arthritis and bad eyes. I wish I would have watched the installment video first before ordering it but too late it’s already on it’s way. Maybe I can find a gun smith in my area to install it. Don’t really want to send it to mcarbo and have to wait for it. Just bought the gun and haven’t even fired it yet. That might change today.
I also have the bolt tube cover and taller notched rear sight coming but don’t think those will be any problem.

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Welcome aboard @cb56

Fear not. There are plenty of fine people here who will be more than willing to talk you through the process and make it as easy as humanly possible for you. Happy shooting to you if you make it out today :v:t2:

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@cb56, check out the reply 3 above yours. It’s very easy on the hands and quick.

Welcome to the forum.

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I did make it out to the range today. Only shot 10 rounds just to make sure the gun worked.
I managed to hit 8 1/2 x11 piece of paper 7 times at 25 yards hand held. That’s not bad for me. Haha.
Recoil was not bad at all. I’ve got a rubber butt pad coming so that should ease the butt of the gun from digging into my shoulder. The hardest part was charging the gun and putting it back into the locked open position when done. That bolt spring is pretty stout.

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@cb56, shoot the hell out of it. :wink: It should get easier the more you use it.

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Hallejuah, I’m glad I found that suggestion. I’ve spent close to an hour on trying to get my spring compressed, and got close to finishing it before human error made me start over again. Hopefully that twisting trick will work if one end cap is off the spring?

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@thehazemeister Or you could have a friend pull down on it and in a few seconds it’s installed.

And I should have come here first too. Did watch the installation video and tried it, but had trouble.

Had my son help me compress the spring but I punched my Allen wrench through above, rather than below the upper clamp so it would slide when I went to install the new end cap. I ended up pulling the pin and relieving pressure on the spring and then realized I was hosed. Without an end cap on the one side I don’t know how I’m going to compress the spring now to try again.

Any suggestions of where to go from here?

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@Tstetz, I had the same problem and this worked for me.

Originally posted by @tinktrain1

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It is more difficult when the end cap is off, I don’t use the twist method. I built an aluminum tube compression tool that works easy, you can mail your spring and retainer parts to me and I will install it for you and mail it back. PM if that’s what you want to do and I will PM you my address.

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So the twist method may work even with the end cap off? I may try that first but if I can’t get it I may take you up on that offer Oneof6. I really appreciate the offer!

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Yes, my end cap was off. I was just about ready to order a new spring when I found this method. It wasn’t hard at all. Only took about a minute.

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