KEL-TEC SUB-2000 Integrated Tool-Less Locking Pin for Aftermarket Charging Handles

I used a one handed bar clamp to compress the spring, was completed with the install in 5 minutes.

Only 3 stars due to difficult installation. Bloody thumb to prove it! Suggest you offer this part installed, as an option, on a replacement factory recoil spring assembly ($10 at Kel-Tec). Just add the additional cost of the new spring assembly since it is so easy to install!

Tired of breaking down your rifle and having the locking pin pop out and roll off into oblivion when you pull out the recoil spring? Tired of trying to reinstall that pin using a long screwdriver? This guy is your answer.

I’m that older guy with arthritis that Chris was talking about in the install video. No offense to anyone, but I think a lot of people make this install more difficult than it needs to be. I guess I think outside of the box as I had little trouble installing this. I simply drilled a hole in a block of wood and inserted the recoil spring in there to hold it steady. I used a small screwdriver to compress the spring then I stuck a second screwdriver through the coils and through that wire loop to maintain the compression. (A screwdriver is easier on your hands than using that skinny allen wrench.) I did this multiple times compressing the spring a little further each time. Yah, it does take a little strength to get the spring compressed enough, but once you do just take one of those little screw drivers (or the allen wrench) and stick it through the spring coils under that wire loop, relax for a minute and take a breath. During this process I did not once have to use my hands or fingers on the spring and risk losing any skin. After this, I followed the video exactly. I stuck a screwdriver through the coils under the tab, compressed a bit, angled the metal tab and rotated the screwdriver around to spread the wires and the tab popped right off. I slightly compressed the spring a bit, rotated to spread those wires apart again and popped in the locking pin. It’s no more difficult than removing that tab you just popped off. If it isn’t easy then you’re doing it wrong. Check your work before allowing the spring to fully decompress then reassemble the weapon. No more needing a screwdriver to assemble and no more losing or chasing after the locking pin.

M*CARBO has designed a lot of great upgrades for the SUB-2000, but this is probably one of the most innovative and eliminates that little bit of frustration you might experience trying to reassemble the weapon and makes it just a tad easier.

Charging handle won’t lock back . Installed original an works fine . Reinstalled an same problem . They said they sent a response. I can’t see it because says password is incorrect. Did that 5 times already!!!!!!! Pissed

I of course didn't read the instructions/watch the video and said the same curses that everyone reading this did. Compressing an oily spring under compression using only your hands WILL remove skin and maybe an eyeball - here's how to work smarter not harder:

* a 3/8" deep socket in a vice holds the spring nicely. If you don't have a socket set, back away from the weapon and find someone who does.
* get a paperclip, it will help prevent "pushing" the freed link into the captured link.
* compress the spring as shown, insert the little hex wrench, and bend the papercip into a tight U below the hex at 90 deg to capture the upper loop.
* Thread the spring down the hex/paperclip into the compressed captured end in the vice - screw it down like a bolt.
* once tension is off the top spring keeper, swapping in the new improved part is cake.

I spent 10 minutes cursing, pooped a beer and then it took maybe 45 seconds using this approach.

I tore all the skon off my fjngers pulling the speing back over and over and trying to insert the pin to hold it back. Had wuite the time but i fjnally got it. I cant help but assume it would have been so mivh easier if I had one of the blocks to hold the base. Once ready to go in the weapon I do like how it is so muvh easier to get the charging handle to stay in. Makes assembly muvh quicker.

If the tool pops out you are totally screwed. Now I have no idea how to compress the spring to get the locking pin in. I am really wishing I had not attempted to use this pin

 

Used a caulking gun to compress spring. Also used bolt from gun to keep spring straight.