Colt Umarex .22lr Bolt Adjustment...

[Cru Jones]

I was just reading through the manual for the Colt Umarex .22lr and it talks about adjusting the allen screw on the back of, what is normally the bolt assembly on an AR, to compensate for different types of ammo. The shop I bought the rifle from said that out of the box, I should immediately get the supplied allen wrench and turn that allen screw 9 times. The problem is if you turn that screw 9 times, it sticks out so far you can't fit the upper and lower back together. Also, the manual doesn't say anywhere to do that.

Anyone else heard of this? Those that have taken theirs out shooting, did you have to adjust this screw at all?

Thanks.

[Touchdown456]

I was just reading through the manual for the Colt Umarex .22lr and it talks about adjusting the allen screw on the back of, what is normally the bolt assembly on an AR, to compensate for different types of ammo. The shop I bought the rifle from said that out of the box, I should immediately get the supplied allen wrench and turn that allen screw 9 times. The problem is if you turn that screw 9 times, it sticks out so far you can't fit the upper and lower back together. Also, the manual doesn't say anywhere to do that.

Anyone else heard of this? Those that have taken theirs out shooting, did you have to adjust this screw at all?

Thanks.

Yes, you should adjust the screw to help slow the bolt down when shooting High Velocity ammo (such as CCI Mini Mags, which is what mine likes best). However, I think you have the information backwards. You should turn the screw 9 times CLOCKWISE, so it goes further INTO the bolt assembly. Tightening the screw puts more tension on the spring, thus slowing down the bolt's recoil. Doing this will give you almost zero misfires.

Another quick note - before you shoot it for the first time (if you haven't already), you should do a complete tear down, cleaning and lube. From the factory, there is a lot of left over dirt and metal shavings that need to be cleaned out. Check out some of the forums here and if you have any questions, please feel free to contact me.

Other than that, enjoy. You'll love the rifle, and take advantage of accessorizing it, since it's completely legal. Here's where I'm at with mine:




Have fun!

[HKDoc]

Yes, you should adjust the screw to help slow the bolt down when shooting High Velocity ammo (such as CCI Mini Mags, which is what mine likes best). However, I think you have the information backwards. You should turn the screw 9 times CLOCKWISE, so it goes further INTO the bolt assembly. Tightening the screw puts more tension on the spring, thus slowing down the bolt's recoil. Doing this will give you almost zero misfires.

Another quick note - before you shoot it for the first time (if you haven't already), you should do a complete tear down, cleaning and lube. From the factory, there is a lot of left over dirt and metal shavings that need to be cleaned out. Check out some of the forums here and if you have any questions, please feel free to contact me.

Other than that, enjoy. You'll love the rifle, and take advantage of accessorizing it, since it's completely legal. Here's where I'm at with mine:




Have fun!

I agree, you probably turned it the wrong way. I had trouble with mine before I made this adjustment. The firing pin would light strike. Worked fine after that. Have fun!

[Cru Jones]

Yes, you should adjust the screw to help slow the bolt down when shooting High Velocity ammo (such as CCI Mini Mags, which is what mine likes best). However, I think you have the information backwards. You should turn the screw 9 times CLOCKWISE, so it goes further INTO the bolt assembly. Tightening the screw puts more tension on the spring, thus slowing down the bolt's recoil. Doing this will give you almost zero misfires.

Another quick note - before you shoot it for the first time (if you haven't already), you should do a complete tear down, cleaning and lube. From the factory, there is a lot of left over dirt and metal shavings that need to be cleaned out. Check out some of the forums here and if you have any questions, please feel free to contact me.

Other than that, enjoy. You'll love the rifle, and take advantage of accessorizing it, since it's completely legal. Here's where I'm at with mine:




Have fun!

NICE LOOKING RIFLE! Thanks for the advice, I did get incorrect info it sounds like. I haven't shot it yet but plan on cleaning it completely first. I bought a can of gun scrubber and need to go pick up some lubricant for it.

Do you know if you can put a fake can on that thing? The way the flashhider unscrews and comes off, I would think if you can get a fake can with the same size thread it would screw right on. I noticed a can in the little booklet that comes with the rifle but I assume that's a real silencer, which I'm assuming is a no-no in CA right?

Thanks for the replies!

[Touchdown456]

NICE LOOKING RIFLE! Thanks for the advice, I did get incorrect info it sounds like. I haven't shot it yet but plan on cleaning it completely first. I bought a can of gun scrubber and need to go pick up some lubricant for it.

Do you know if you can put a fake can on that thing? The way the flashhider unscrews and comes off, I would think if you can get a fake can with the same size thread it would screw right on. I noticed a can in the little booklet that comes with the rifle but I assume that's a real silencer, which I'm assuming is a no-no in CA right?

Thanks for the replies!

Not much of an expert on cans. I know for sure that a real suppressor is illegal in CA. I think a fake one is ok as long as it doesn't lower the sound by even 1db. Any sort of suppression, even the most minute one, is illegal. That being said, the M4 does not have a standard thread on it. However, there is a guy on ebay selling an adapter for such a situation:

Ebay Thread Adapter

Final note, when you really start shooting this gun, you'll feel the need to tear it down way more than the manual instructs. When that happens, there are some posts on here explaining the steps, but keep this in mind - the internals of this rifle are not at all like a real AR, and there are a bunch of small springs that can and will jump out at you if you're not careful. If/when it does come to that point, hit me up, and I can send you some step by step pics.

[L4D]

how many full turns clockwise from flush does your adjustment screw need until it stops?

http://www.youtube.com/watch?v=-zhVBY6e1n0&eurl=http://www.colt22rimfire.com/index.php%3Fpage%3Dvideos&feature=player_embedded

mine needs a lot more than what they demonstrate on this video.

like 17-18 full turns probably could go more but kind of worried about how far i can take it without damaging any parts.

[Touchdown456]

how many full turns clockwise from flush does your adjustment screw need until it stops?

http://www.youtube.com/watch?v=-zhVBY6e1n0&eurl=http://www.colt22rimfire.com/index.php%3Fpage%3Dvideos&feature=player_embedded

mine needs a lot more than what they demonstrate on this video.

like 17-18 full turns probably could go more but kind of worried about how far i can take it without damaging any parts.

Understandable. When I first adjusted the bolt, I did 9 full turns. Since then, when I'm cleaning, I've been doing about 11 turns cause I figure the spring is getting weaker with every 1000 rounds I put through it. I've never turned it till it stops. There's no need. No to mention that my spring already has a kink in it from the 9 turns alone. Hasn't affected performance in any way though.

[L4D]

Understandable. When I first adjusted the bolt, I did 9 full turns. Since then, when I'm cleaning, I've been doing about 11 turns cause I figure the spring is getting weaker with every 1000 rounds I put through it. I've never turned it till it stops. There's no need. No to mention that my spring already has a kink in it from the 9 turns alone. Hasn't affected performance in any way though.

Maybe the video is for demonstration purposes only. Because he says to turn it until it stops, but you only see him turn it like 4-5 full turns.

lol, maybe i should back it out a few turns or call umarex and ask them myself.

[Touchdown456]

Maybe the video is for demonstration purposes only. Because he says to turn it until it stops, but you only see him turn it like 4-5 full turns.

lol, maybe i should back it out a few turns or call umarex and ask them myself.

Have you shot it yet? And if so, what ammo are you using? Umarex is just going to tell you an average adjustment, so in the end it only matters how it works at the range. I would say, start with 9 turns, shoot a hundred rounds through it, and if it fires ok, then you're good. If you get some light strikes or feed failures, then turn it a couple more times. Nothing will give you better info than your own trail and error.

[L4D]

Have you shot it yet? And if so, what ammo are you using? Umarex is just going to tell you an average adjustment, so in the end it only matters how it works at the range. I would say, start with 9 turns, shoot a hundred rounds through it, and if it fires ok, then you're good. If you get some light strikes or feed failures, then turn it a couple more times. Nothing will give you better info than your own trail and error.

yup got 600 rounds through it. and i had my adj. screw 9 turns clockwise as well.

CCI Mini Mags - 200 - w/ 0 FTF
Winchester experts - 200 w/ 1 FTF
Federal Bulk - 200 w/ 3 FTF

i figured that i hit a sweet spot with the adj. screw considering occasional FTF's are normal for 22's.



P.S. Who is hosting anything from 3rdfloorfilms . com? i keep getting virus warning from bothe google chrome and my avast antivirus. when trying to read this thread

[Touchdown456]

P.S. Who is hosting anything from 3rdfloorfilms . com? i keep getting virus warning from bothe google chrome and my avast antivirus. when trying to read this thread

That's my site, but it's an old warning. I cleaned out the site but Google has yet to rescan it. It's safe though. Sorry for the problems.

[L4D]

That's my site, but it's an old warning. I cleaned out the site but Google has yet to rescan it. It's safe though. Sorry for the problems.

lol, i thought it was you. it was where ever you posted a pic. it was old definitions, so i figured it was fine.

back on topic, i emailed umarex with the question. Just to fulfill my curiosity.

[Touchdown456]

lol, i thought it was you. it was where ever you posted a pic. it was old definitions, so i figured it was fine.

back on topic, i emailed umarex with the question. Just to fulfill my curiosity.

Cool let me know what they say. I'm curious as to what they think the optimal adjustment is.

[Brian617]

Another quick note - before you shoot it for the first time (if you haven't already), you should do a complete tear down, cleaning and lube. From the factory, there is a lot of left over dirt and metal shavings that need to be cleaned out. Check out some of the forums here and if you have any questions, please feel free to contact me.

Do you do more cleaning than what is shown in the video posted above? I saw the thread about removing the trigger group to mess with the trigger, but the video only shows some minor cleaning/lubing after separating the upper from the lower. It says field stripping beyond that point is not recommended or necessary.

I followed the instructions from the video when I cleaned and lubed my rifle when I bought it new. I have fired about 400 rounds (all copper plated) since, and I have only had one FTE. This is my first .22, and I have noticed that this rifle gets quite a bit dirtier than any centerfire gun I've had. I'm just wondering if I should do more to clean/lube it than what is shown in the video.

[Touchdown456]

Do you do more cleaning than what is shown in the video posted above? I saw the thread about removing the trigger group to mess with the trigger, but the video only shows some minor cleaning/lubing after separating the upper from the lower. It says field stripping beyond that point is not recommended or necessary.

I followed the instructions from the video when I cleaned and lubed my rifle when I bought it new. I have fired about 400 rounds (all copper plated) since, and I have only had one FTE. This is my first .22, and I have noticed that this rifle gets quite a bit dirtier than any centerfire gun I've had. I'm just wondering if I should do more to clean/lube it than what is shown in the video.

Further cleaning than what is shown in the video is entirely up to you based on your comfort level for disassembling the gun. This gun is complex in it's workings. Personally, after I put about 1000 rounds through it, I like to remove and dissemble the bolt carrier group and the trigger assembly. There are a lot of little screws and springs that can easily go flying everywhere. My recommendation to you is to clean the gun with gun scrubber, use it liberally and really let it flush out the gunk. Then, study the exploded diagram in the back of the manual, along with the posts on here dealing with disassembly. If you feel comfortable enough to remove everything, do so slowly and carefully, and take care to remember where every little screw and spring go.

If you really want to clean it out, I will probably be doing a full cleaning this weekend and I can take pictures and document each step. Usually takes me about an hour and a half for the whole process.