New AC556 with Ciener kit...need help w/extended burst and suppressor

[loulittle]

I recently installed Ciener’s 22LR conversion kit that I bought new a couple of months ago. Took it out to the range today.

Ran like a top (after I oiled the crap out of it) with most high velocity ammo running at around 1,200 fps. Mags all did what they’re supposed to. The only issue with hi-vel ammo was that in burst mode it fired more than three rounds. I did not get a count on this extended burst but wonder if any one else has had this experience?

In trying to use a suppressor, CCI Standard Velocity (which runs at 1,070 fps) will eject the spent case, but the bolt is not coming back far enough to catch a fresh round and chamber it. I have a Spectre 22 from SilencerCo and want to run ammo just making subsonic.

Has anyone on this forum solved this suppressor problem before? I plan to contact Ciener and see what they say. Perhaps he has a lowered powered recoil spring.


Thanks for any help!

Lou

 

[Offmarksman]

First, don’t bother calling J. Ciener. You have a better chance of winning the powerball than actually getting a call back. You could buy a replacement spring from him (if he happens to have them in stock, because if he doesn’t he will just send back your money order or check), that way you have a spare. Then take your original and clip a round off at a time to decrease spring pressure. Good Luck!!!

 

[loulittle]

Thanks for responding. Will try that while waiting to see if anyone has already been down this path and figured it out.

 

[nklf]

You might try Gemtech subsonic ammunition? It is made by CCI and uses a 42gr bullet. It runs subsonic in my guns and will cycle the action fully on everything I have tried it in. Of course your results may vary as no .22 are alike in my experience.

 

[loulittle]

Thanks, nklf. Will give that a try.

 

[BuffDragon]

some things I found when I played with my kit years ago
albeit....in semi auto form, but think you might get something from it;
gun: 13" sidefolder SBR (for barrel length purposes)
suppressor: swr spectre

1: I had runaways occasionally with high velocity ammo paired with a suppressor. I thought maybe it had to do with the additional back pressure of the higher velocity round coupled with the back pressure of a can on it "over running" the trigger (or cam in your case?)
2: when my kit was installed, I noticed a "bump" (for lack of a better word) in the receiver where the bolt ran and hung the bolt up some (though didnt seem to be an issue in full power ammo/bolt). I carefully ground down the bump smooth to the rest of the receiver and never had a problem after that. maybe the reverse of #1 is true when you're running lower power ammo, in that it doesnt have enough back pressure to eject fully because the bolt is rubbing on the bump, robbing energy.
3: agreed....you'll never hear from JAC. but some years ago, you could buy spare springs from lakeside machine? think that's who had them. but cutting a coil at a time is good info for reducing the power of your existing spring. but maybe hurts the performance of CCI standards?
4: be on the lookout for old blackdog mags. pretty sure they dont make them any more, but they were far superior to ciener mags. troll gunbroker for them.

again, I am not lucky enough to have an AC, but spent some time playing with my 22 kit years ago.

 

[loulittle]

Thanks for the ideas. I’ve read a lot of cautionary comments regarding John Ciener. I can only relate my experience. The kit and extra magazines I ordered were delivered within the timeframe I expected (I wrote a personal check which adds to the time). The kit was well packaged in a nice case made for it.

Installation was a little frustrating but I chalk that up to my lack of skills putting parts together. It took me a fair amount of time to properly install the operating rod in the rail over the bolt. Now it seems too simple, but for whatever reason it had me stumped. If I pull the operating rod back fully it can come back off the bolt, but it’s not been a problem in operation.

I’ll order some extra springs from John. We’ll see if he continues to provide good service.

 

[BuffDragon]

Thanks for the ideas. I’ve read a lot of cautionary comments regarding John Ciener. I can only relate my experience. The kit and extra magazines I ordered were delivered within the timeframe I expected (I wrote a personal check which adds to the time). The kit was well packaged in a nice case made for it.

Installation was a little frustrating but I chalk that up to my lack of skills putting parts together. It took me a fair amount of time to properly install the operating rod in the rail over the bolt. Now it seems too simple, but for whatever reason it had me stumped. If I pull the operating rod back fully it can come back off the bolt, but it’s not been a problem in operation.

I’ll order some extra springs from John. We’ll see if he continues to provide good service.

that's amazing. but good to hear.

 

[K2]

Hi LouLittle,

Awhile back Winchester was loading their M-22 line with 45gr LRN copper plated subsonic.

https://www.targetsportsusa.com/win...0-grain-bplrn-800-rds-s22lrtsups-p-58748.aspx

for example. I was able to get them for about 9 cents/each at my local sporting goods store in 100 round boxes.

Anyway, these had quite a bit of push on the bolt of my F/A 22's and were dead quiet. I'd guess these might make your gun run.

Academy has 42 gr Winchester M-22 subsonics but they are hollowpoints. That might cause problems.

I'd try to score a few hundred of the 45gr RN subsonics and see how they work for you.

Just a thought,

K2

 

[loulittle]

Thanks, K2. Will try both. Also will tinker with the recoil spring when I get a couple extra.