Buttstock issues

[broncokr]

I have a Command Arms SRS stock and I'm having cycling issues. It attaches to my Rifle buffer tube. The problem I'm having is that the rifle length buffer and spring I have on it don't let the bolt travel far enough to provide the necessary inertia to strip and chamber the next round. I have tried replacing the Rifle length buffer with a carbine buffer while leaving the rifle length spring and the rifle cycles just fine. however I don't believe this is the fix since I'm running a 20" barrel. I've already tried shortening the screw that holds the stock on the tube and it helped the buffer travel further back but not enough. Any help would be appreciated. Thanks Guys

[ray1970]

So, if you pull the charging handle back by hand does the bolt carrier go far enough back to lock it open with the bolt catch?


In other words, if you had an empty mag in the rifle and you pulled the charging handle back does it lock the action open?

[broncokr]

It does lock back on an empty mag and I can hold it with the bolt catch. However I did have to shorten the screw to get to this point. Before I did that the slightest bump would disengage the bolt catch and not even an empty mag would stop the bolt from going into battery. It's a weird one. I'm wondering if its the A2 buffer tube that I got from Rock River Arms.

[ray1970]

The only difference between an A1 and an A2 is the A2 has a spacer that goes at the end of the tube and thus uses a much longer screw. If your stock doesn't use the spacer then the A2 screw would be way too long. Might try an A1 screw or shorten your screw down to that length.

Also, if you're running steel cased ammo that might contribute to short cyling as well.

Hope you get it figured out. Always much more fun to shoot a properly functioning rifle.

[ferrum]

Also, if you're running steel cased ammo that might contribute to short cycling as well.

That was the first thing I thought. My bushy will just barely cycle Tula.

[BPTactical]

Look at the upper screw in the buttplate.
Does it have a hole drilled lengthwise through the shank?
If not, there is the problem more than likely.
This hole is required to allow the air behind the buffer to vent. If it is not there the air behind the buffer becomes compressed, dampening the recoil energy to the extent it can cause short stroking.

[broncokr]

Sorry guys I was away. I did shorten the srew and it does have the hole. I was running steel cased ammo so that might be part of the problem there. I e-mailed Command Arms and they are advising me to try a different buffer and spring combination. He did fess up to the fact that I'm by no means the only person that has had this issue. Buyer Beware. should have just gotten the Magpul PRS

[SideShow Bob]

The way I am reading this, are you are using a rifle length spring and a rifle buffer in a carbine tube ? If so, there is your problem. Run a carbine spring and buffer in a carbine tube.
If i read this wrong, sorry, my mistake.

[broncokr]

I wish that was the problem at least then I could move on. But no.. I'm running a stock A2 buffer tube. I think I'm gonna buy a 308 buffer since they are a half an inch shorter albeit 2 oz heavier.

[spongejosh]

Have you fired the rifle with no stock on it? I'd fire it with just the rifle length tube, spring and buffer with no stock and make sure it fires like that. If it doesn't work like that then you have a bigger issue than the stock.

Really the only difference between a bare rifle buffer tube and one with a stock is the screw in the end.