AR Dedicated.22LR and accuracy?

[obx22]

I purchased a used dedicated rimfire upper that has proven to be incredibly reliable with a vast expanse of ammo, from subs to hi-vel, truncated nose, etc.
Problem is, while I’ve never had a stoppage, it’s not accurate either.
Has anyone rebarreled a Tac-Sol upper for better groups?

 

[pabrousseau]

Tag

 

[nakoa01]

Only thing I have not owned st this point would be a compass lake and keystone. Oddly enough they are theyb2 that get the most accurate reviews. This summer I plan to fond out. As for now the most accurate combo I have had is the beyer barrel/cmmg 22arc bolt.combo. never a hick up in 7 builds. But when using cci suppressor I have to keep the chamber clean. The chamber is a match style chamber designed around the cci std velocity built. The large hollow point makes it hard to seat the first bullet home if it's dirty. After that one is in everything else is a go. Cci std velocity is an all.day event if need be. Suppressed or not doesn't matter

 

[EddieE]

Only thing I have not owned st this point would be a compass lake and keystone. Oddly enough they are theyb2 that get the most accurate reviews. This summer I plan to fond out. As for now the most accurate combo I have had is the beyer barrel/cmmg 22arc bolt.combo. never a hick up in 7 builds. But when using cci suppressor I have to keep the chamber clean. The chamber is a match style chamber designed around the cci std velocity built. The large hollow point makes it hard to seat the first bullet home if it's dirty. After that one is in everything else is a go. Cci std velocity is an all.day event if need be. Suppressed or not doesn't matter

Been wanting to buy a CMMG upper for about 8 months now. They are not available. At close to $600 each, I can't believe they aren't cranking them out. Probably a huge profit margin item for them. Have my suppressor at the FFL now. With eforms, I should be able to pick it up in 3-4 months. But I will not have a AR-22 to shoot with it.

This is what CMMG says...not selling, complete rifles, upper receivers, lowers, etc.

 

[Criver600]

I purchased a used dedicated rimfire upper that has proven to be incredibly reliable with a vast expanse of ammo, from subs to hi-vel, truncated nose, etc.
Problem is, while I’ve never had a stoppage, it’s not accurate either.
Has anyone rebarreled a Tac-sol upper for better groups?

Finally wore my Tac-sol upper out, 15,000+ rounds. (Bolt beat the end of the barrel to death) totally rebuilt the upper with CMMG parts. Runs great but accuracy is mediocre compared to my bolt actions.

 

[Cowpokey]

I've got a Tippmann Elite, runs great, accuracy is way better than I expected.

 

[nakoa01]

Inwas about tonsuggets the tippman elite. From what I read unless your going custom theybare the way to go. I know they use a bentz semi auto match chamber according the their R&D guy I spoke with.

 

[FromMyColdDeadHand]

Cmmg upper with boonie pack bolt hold open. Prefers heavy, fast ammo- but runs like a champ.

For accuracy, I’ve always wanted to see what one of those JP 22 rifles can do.

 

[Ndbowhunter]

my nordic 22lr is about 1/2" to 5/8" with ammo it likes at 50.

 

[ronnielee54]

Clint Beyer barrel, CMMG bolt, Good upper receiver, hand guard, charging handle, and a Boonie Packer and you are done. Extremely easy to build. Beyer barrels are very, very accurate. I have an 18" and a 10" and love them.

 

[hlee]

Define “accurate.” What ammo are you using?

 

[ronnielee54]

RWS Target Rifle, Wolf, SK Standard Plus, and Gecco Semi-Auto mostly. All SV ammo. Not 1 hole groups but a nickel will cover a 5 shot group shot at 50 yds most of the time. I think a better shooter could get sub moa. I can't, but it is not because of the rifle. The Hiperfire trigger set at 1.5 lbs. also helps.

 

[nakoa01]

I have tested 7 of these barrels and a couple of kidd supergrades. The kidd is easier to shoot consistently. However I have one rifle that is set up to shoot from the bench. It shoots right with my kidds with sk pistol match. The chamber of the beyer is designed around the cci std velocity bullet. And all of these barrels will shoot a typically nickel group with it. With sk pistol match I see dime sized groups at 50yds more often than not. The barrels are outstanding. My bench AR is set up with a warne super high mount which really helps me. Luth ar rear, front bipod for weight. Suppressor to help consistent recoil. And an 18x scope. All but 1 of them has a tomney clavin elite in them.

 

[erik72]

I purchased a used dedicated rimfire upper that has proven to be incredibly reliable with a vast expanse of ammo, from subs to hi-vel, truncated nose, etc.
Problem is, while I’ve never had a stoppage, it’s not accurate either.
Has anyone rebarreled a Tac-Sol upper for better groups?

I have two Tac-Sol uppers. One with the lightweight aluminum barrel with the steel (or sst) liner and one of the M4 profile steel barrels. I've never shot either of them for dead on accuracy but they do feed everything I've put in them. I disassembled the lightweight barrel once. The barrel has a sleeve over the breech end which accepts the TacSol bolt. It is removable and once removed the barrel doesn't look too different than a 10/22 barrel (w/o the notch of course). If you can get that sleeve off and get some dimensions, I bet a smith could spin a barrel from your blank of choice pretty easy. The sleeve is glued on; I assume with blue loctite and two set screws. I was able to remove it pretty easy.

I feel like it was on this forum where someone was planning to do it and he shared a photo of the barrel sans sleeve (collar). I'll see if I can find the picture. I know I saved it.

 

[erik72]

Here are a few pictures of my barrel showing the sleeve. Sadly, I did not take any pictures when I had the sleeve off. I really like the Tac-Sol bolt. In my opinion it's a much improved version of the CMMG bolt. Nearly identical except the Tac-sol and CMMG are "clocked" just slightly different at the ejector relief cut and rail cuts.

 

[erik72]

I purchased a used dedicated rimfire upper that has proven to be incredibly reliable with a vast expanse of ammo, from subs to hi-vel, truncated nose, etc.
Problem is, while I’ve never had a stoppage, it’s not accurate either.
Has anyone rebarreled a Tac-Sol upper for better groups?

Oh hell! That was you that posted that picture. That's funny! I was wondering the other day if you'd had any success doing that. I actually purchased a couple of those Anschutz blanks from Numrich like I mentioned. My brother is capable of doing this project, he's just not able to do "gummit" work on a Government Installation (Edwards AFB).

I did correspond with another fella at Accurateshooter that has turned a couple of his own barrels by making a similar sleeve to use the 1" green mountain blanks. This is just to fit into the receiver. He used the CMMG barrel stub and collar for the chamber.

 

[ratton]

My Compass Lake upper will hold its own with my Anshutz, Sako's and 40X. They are expensive, but they are awesome performers and you will not be disappointed.

 

[EddieE]

My Compass Lake upper will hold its own with my Anshutz, Sako's and 40X. They are expensive, but they are awesome performers and you will not be disappointed.

that's a hell of a claim. Will look into the CL upper. Getting sick of waiting for CMMG. Rock river has a 8 month lead time for their uppers. Ridiculous.

 

[ronnielee54]

that's a hell of a claim. Will look into the CL upper. Getting sick of waiting for CMMG. Rock river has a 8 month lead time for their uppers. Ridiculous.

No need to wait. It is very easy to build a dedicated 22LR AR upper. No special tools are really needed. You don't really have to torque the barrel nut down like you do on a AR15 or AR10. I have built 7 complete AR rifles. The 2 rimfires were extremely easy. With all of the videos on the internet, piece of cake, plus you get exactly what you want.

 

[EddieE]

No need to wait. It is very easy to build a dedicated 22LR AR upper. No special tools are really needed. You don't really have to torque the barrel nut down like you do on a AR15 or AR10. I have built 7 complete AR rifles. The 2 rimfires were extremely easy. With all of the videos on the internet, piece of cake, plus you get exactly what you want.

Barrel- $250
upper- $100
bolt- $200
guard- $100 (at least)
muzzle device- $20

Am I missing anything?

 

[ronnielee54]

Barrel- $250
upper- $100
bolt- $200
guard- $100 (at least)
muzzle device- $20

Am I missing anything?

Charging handle, Boonie Packer mag conversion for your lower if you want to use 15/22 mags, and a CMMG dedicated breech collar for your bolt if it doesn't come with one. If you can't find a CMMG bolt with collar, you can still buy a conversion CMMG bolt, take the end that fits in the AR15 barrel chamber off, and replace it with the collar. More expensive this way but you end up with the same results. Be advised that CMMG has many dealers online so look around. I found my bolt at an online merchant called Right to Bear arms.

 

[ronnielee54]

Barrel- $250
upper- $100
bolt- $200
guard- $100 (at least)
muzzle device- $20

Am I missing anything?

Charging handle, Boonie Packer mag conversion for your lower if you want to use 15/22 mags, and a CMMG dedicated breech collar for your bolt if it doesn't come with one. If you can't find a CMMG bolt with collar, you can still buy a conversion CMMG bolt, take the end that fits in the AR15 barrel chamber off, and replace it with the collar. More expensive this way but you end up with the same results. Be advised that CMMG has many dealers online so look around. I found my bolt at an online merchant called Right to Bear arms. This is a dedicated 22LR I built using Seekins Precission billet upper and lower receivers, Noveske NSR15 hand guard, Beyer 18" barrel, Hiperfire 24C trigger, CMMG bolt, and a Magpul PRS buttstock. The scope has been replaced with a Vortex Viper HST 6-24x50. I probably could have bought a Vudoo for what this build cost.

 

[nakoa01]

Clint beyer bull barrel 250
Rtb 22lr bolt 169
CH 20
Upper 89
Handguard 165ish

If no right to bear bolt cmmg 22arc stainless. RTB and the cmmg both come with thr bolt collar.

Does the booney packer work with cmmg bolt, Smith mags, and last bolt hold open feature work reliably?

 

[nakoa01]

My Compass Lake upper will hold its own with my Anshutz, Sako's and 40X. They are expensive, but they are awesome performers and you will not be disappointed.

How dependable is that unit?? I am flirting with selling something and getting one. But I want it to be as reliable as what I have been running and excellent accuracy.

 

[bhoges]

Cmmg upper with boonie pack bolt hold open. Prefers heavy, fast ammo- but runs like a champ.

For accuracy, I’ve always wanted to see what one of those JP 22 rifles can do.

I have one and its not worth it. My DPMS upper shoots as good maybe better. I was bummed. Maybe the JP does 3/4 at 50 yards with Eley Tenex and Black. I dropped big money spared no expense.

 

[ronnielee54]

Clint beyer bull barrel 250
Rtb 22lr bolt 169
CH 20
Upper 89
Handguard 165ish

If no right to bear bolt cmmg 22arc stainless. RTB and the cmmg both come with thr bolt collar.

Does the booney packer work with cmmg bolt, Smith mags, and last bolt hold open feature work reliably?

It works really good with the CMMG bolt and the SW mags both 10 and 25 rnd. As far as the bolt hold open feature, I would say it is pretty reliable. Not guaranteeing 100% but is anything really 100%?

 

[acourvil]

How dependable is that unit?? I am flirting with selling something and getting one. But I want it to be as reliable as what I have been running and excellent accuracy.

I had a Compass Lake upper years ago. It shot great, very accurate, but it used the old magazines that you insert into AR mags. I had regular feeding problems with them, could never seem to get them right. Not sure if they are using that same system now or not. I now have a JP 22 upper that also shoots great and uses Black Dog magazines and have not had any feed problems.

 

[EddieE]

Quick question. I just read that some have report damage to the lower at about 12 o'clock above the buffer when using the dedicated upper. I guess it would be here. Since my lower is precious (can't get another due to where I live), I don't want to damage it in any way. Is there a work around to this? I just came across this today so, have not read too much on it.

 

[ronnielee54]

22lr-plug

 

[EddieE]

22lr-plug

Thanks. Checked with borebuddy, they said there could still be some damage to the lower even with the plug.

Leaning toward these parts:
Aero upper
Aero hand guard (or NBS 12" to save a few bucks)
Aero charging handle
Beyer barrel
CMMG bolt
bore buddy charging handle insert, plug, buffer

You said the barrel doesn't need to be torqued down other than hand tight?

 

[ronnielee54]

Thanks. Checked with borebuddy, they said there could still be some damage to the lower even with the plug.

Leaning toward these parts:
Aero upper
Aero hand guard (or NBS 12" to save a few bucks)
Aero charging handle
Beyer barrel
CMMG bolt
bore buddy charging handle insert, plug, buffer

You said the barrel doesn't need to be torqued down other than hand tight?

No, it needs to be more than hand tight. I just didn't use a torque wrench. My hand guard came with barrel nut wrench that fit a 1/2" torque wrench. I just cranked it down with a breaker bar. Tighten it good. I don't have a bore buddy on mine, but after a few thousand rounds all I am seeing on the Bach of my lower is what looks like some scraping. I really don't think a 22LR would cause that much impact but all I shoot is SV match ammo. Mostly RWS Target Rifle. The CMMG has different springs available to soften or stiffen the recoil. I use a little stiffer one. I think it is the middle one. Kind of like Kidd does.

 

[nakoa01]

I had tighten mine. Then put a wrench in and go touch past snug.

Do yourself a favor and get the cmmg or rtb 22lr charging handle. It virtually eliminates hangups in the charging handle/bolt slot. Rtb also sells an extended latch for 22lr. I love it especially when running a scope.

 

[FromMyColdDeadHand]

It works really good with the CMMG bolt and the SW mags both 10 and 25 rnd. As far as the bolt hold open feature, I would say it is pretty reliable. Not guaranteeing 100% but is anything really 100%?

Bonnie packer BHO has worked at least 99% for me not sure it ever failed to BHO. Don’t think of it, so it must work.

I had tighten mine. Then put a wrench in and go touch past snug.

Do yourself a favor and get the cmmg or rtb 22lr charging handle. It virtually eliminates hangups in the charging handle/bolt slot. Rtb also sells an extended latch for 22lr. I love it especially when running a scope.

That was the biggest change to the reliability. I used 2 part epoxy ‘metal filler’ to fill the right parts of the CH groove. Stops 22lr cases from getting stuck up there.

 

[ronnielee54]

AR22 Recoil Spring kit

The BoreBuddy Recoil spring tuning kit includes recoil springs of the following weights: 3lb (Light – BLUE) 4lb (Medium – YELLOW) 6lb (Heavy – RED) Stock springs vary in strength,…

borebuddy.com

Bolt Buddy sells the spring kit I was talking about. It allows you tune the bolt to the type of ammo you are shooting. With the accuracy of the Beyer barrel, I prefer to use match ammo. They are really nice barrels. On par with my Fedderson barrel in my 10/22 As far as getting spent brass stuck in the charging handle goes, I have never had that occur after a few 1000 rounds. My AR 22 is really nothing but a range toy so I have never been overly concerned about a malfunction. The only problems I have had is if I don't do my part and keep the bolt lubricated and clean. Another part you might add to your list is a bolt dissembley tool. It allows you to easily pry the arms that hold the bolt collar in place. It was made by a company Calle Christies Products, but I don't know if the are around anymore.

 

[padom]

I just received my second Keystone Accuracy 22LR upper with Green Mountain blank. I've been shooting a 12" SBR Keystone upper for years. Very accurate and runs great with CCI SV, Eley Tenex, SK, etc

Received this 18" Keystone 22LR Green Mountain 2 months ago but been busy with baby coming. Here is the 1st time I got it out to the range a month ago... ran flawless and very accurate with no barrel break in, no cleaning between ammo types, etc. No lot testing. Just wanted to get. A bunch of rounds through it

Shot 100% supressed at 50yd... all 10 Shot groups.

The CCI AR Tacrical Target really surprised me. Was more accurate then I suspected.

Nice thing is you can specify contour, length, threads etc from Keystone. These Green Mountain barrels are one of the best 22lr values out there. From my experience they really tighten up at that 200-300yd round mark because GM are not lapped.






I haven't finished measuring this Target as baby came but will shortly. All 10shot groups.








Keystone machines everything right into the barrel. No CMMG chamber insert. You get everything machined in with a match chamber

 

[nakoa01]

Thats gorgeous. I love the looks of that. What profile is that and length?

 

[padom]

Thats gorgeous. I love the looks of that. What profile is that and length?

Service rifle contour 18"

 

[padom]

Do they have a proprietary bolt?

No...uses CMMG (BOLT ONLY) not the whole 22lr package with chamber adapter and all...

 

[nakoa01]

There is a video of it at keystone website

 

[EddieE]

No...uses CMMG (BOLT ONLY) not the whole 22lr package with chamber adapter and all...

Thanks. So this?

 

[padom]

C

Thanks. So this?

Close to that...not the front piece on that...just the rails and bolt

Ill.take a picture later

 

[nakoa01]

AR-22 Barrels – Keystone Accuracy

keystoneaccuracy.com

Scroll to bottom of page. Last video

 

[EddieE]

AR-22 Barrels – Keystone Accuracy

keystoneaccuracy.com

Scroll to bottom of page. Last video

got it. thanks.

 

[obx22]

I just received my second Keystone Accuracy 22LR upper with Green Mountain blank. I've been shooting a 12" SBR Keystone upper for years. Very accurate and runs great with CCI SV, Eley Tenex, SK, etc

Received this 18" Keystone 22LR Green Mountain 2 months ago but been busy with baby coming. Here is the 1st time I got it out to the range a month ago... ran flawless and very accurate with no barrel break in, no cleaning between ammo types, etc. No lot testing. Just wanted to get. A bunch of rounds through it

Shot 100% supressed at 50yd... all 10 Shot groups.

The CCI AR Tacrical Target really surprised me. Was more accurate then I suspected.

Nice thing is you can specify contour, length, threads etc from Keystone. These Green Mountain barrels are one of the best 22lr values out there. From my experience they really tighten up at that 200-300yd round mark because GM are not lapped.






I haven't finished measuring this Target as baby came but will shortly. All 10shot groups.








Keystone machines everything right into the barrel. No CMMG chamber insert. You get everything machined in with a match chamber

I don’t see mention of Green Mountain Barrels on the website, will they use anyone’s blanks?

What chamber reamer?

Does it engrave the slug of a chambered round?

Do they offer an accuracy guarantee?

What distance were your targets fired at?

 

[padom]

I don’t see mention of Green Mountain Barrels on the website, will they use anyone’s blanks?

What chamber reamer?

Does it engrave the slug of a chambered round?

Do they offer an accuracy guarantee?

What distance were your targets fired at?

Keystone Accuracy has been using GM blanks for many many years. They also stock Bartlein and Krieger. But yes, they will use any blank you want.

They have multiple different 22LR reamers. But their AR22's are chambered with a Bentz reamer.

No they dont offer accuracy guarantee and I dont know anyone that does for 22LR especially. As everyone knows 22LR is all about the ammo/lot.

Distance the targets were shot at is stated in my OP.

 

[obx22]

Keystone Accuracy has been using GM blanks for many many years. They also stock Bartlein and Krieger. But yes, they will use any blank you want.

They have multiple different 22LR reamers. But their AR22's are chambered with a Bentz reamer.

No they dont offer accuracy guarantee and I dont know anyone that does for 22LR especially. As everyone knows 22LR is all about the ammo/lot.

Distance the targets were shot at is stated in my OP.

Thanks, missed the part about 50yds.

 

[erik72]

obx22 - are you giving up on rebarreling your tactical solutions? If you can get that sleeve off there, I bet any smith could duplicate the TS dimensions.

 

[obx22]

obx22 - are you giving up on rebarreling your tactical solutions? If you can get that sleeve off there, I bet any smith could duplicate the TS dimensions.

Actually I haven’t given up, I purchased a lathe and have been taking measurements and may cut a Sako Finnfire barrel to fit.
While I’d prefer the match chamber, if it fails I have a Bentz reamer to piddle with.
While I’d prefer to buy from an experienced provider, I’m hearing too many conflicting stories to know what to trust. I’ll likely have to go my own way...

 

[NCchris]

FWIW, there is a similar thread on Rimfire Central. Thought I'd share. HERE

 

[erik72]

I don't think anyone with either a Compass Lake or a Keystone regrets their purchase. I know I don't. I asked him for the HBAR Service Rifle profile in an 18" barrel though an it is pretty heavy. I think I would have preferred a profile more like that one Padom just got. I've had it out to the range several times but conditions were terrible for full-on accuracy testing. Besides, I don't have any Eley Tenex, SK, or Lapua ammo to wring out it's full potential anyway. One of these days....

I know these threads frequently morph into "what's the most accurate AR22 upper" but I was hoping obx22 had this whole tactical solutions "re-barelling" thing figured out as I may try that myself sometime. I have two Anschutz blanks from Numrich for a project like this I'd like to try.

Actually I haven’t given up, I purchased a lathe and have been taking measurements and may cut a Sako Finnfire barrel to fit.
While I’d prefer the match chamber, if it fails I have a Bentz reamer to piddle with.
While I’d prefer to buy from an experienced provider, I’m hearing too many conflicting stories to know what to trust. I’ll likely have to go my own way...

you won't be disappointed with either CLE or KA. I based my decision to go with KA because I was already pretty heavily invested in the CMMG platform with lots of magazines, a Bob-Sled, redi-mag adapter, and I already had an extra bolt to send him for modification. The CMMG bolt is pretty well supported while the CLE bolt is kind of proprietary to his design (I know it's based on the M261 unit but those are becoming more and more rare).