great stock but un problema
the stock is solid, fits tightly on milspec tube, and is made pratically. The issue i have is the stud for the qd slings. It is high in the stock where the swivel cannot fully swivel around the storage tubes on the buttstock causing it to get snagged or not do its job. They need to work on that clearance issue. Other than that i would recommend and buy again.
Great stock
Comparable to the B5 at a better price (especially when it was on sale) with an added compartment and the option of butt pad switching. Pretty nice
Great stock, way too diffiult to install
As a stock, it's works well, locks up tight and has a great feeling cheek weld. Lots of storage for small items like batteries, ear plugs, etc. The only downside is how difficult it is to install. A dummy plastic round is provided to use as a lever. The first time I tried using it, the tip of the dummy round broke off. So, I had to use a screw driver to pry up the locking pin so it would slide onto the buffer tube. It really should be redesigned so you only need your hands to put it on.
Solid, well designed upgrade.
The original Mil-Spec carbine collapsible stock left three main things to be desired: wobble, cheek weld and length of pull (for me) was too short. All three made sight alignment difficult. The Magpul ACS solved these issues. As the other reviewers have noted, the lockup is solid, I don't think it moves any when the cam-lock is engaged. The cheek weld is cut at just the right angle for sight alignment, and the extra length gets the receiver out there where I like it w/o body armor and vest equipment. You will trade up a little in weight from the OEM stock, and it's good to note that this model does not have slots for top-mounting a sling for patrol carry. However- the Magpul ACS AQ swivel (available here at Brownells) does move the center of gravity up to give you a higher attachment point. If sling options are a priority you might want to check out the other Magpul stocks. For me, the improvements in the ACS are worth the trade for the lower sling mount positions. The storage is ample and that the tubes are accessible from the rear (instead of the front, as in another design I tested recently) is a much better access point. Storage covers close securely and the tubes are probably water-resistant for shallow depths. It looks like you'd be able to stash about 6 or so extra rounds in the little trap door area, which might be a handy thing. I haven't explored the possibilities of this little space Finally Magpul offers more options for the butt plate if more thickness or increased "grab" is desired at the back end, but the one that comes with this is a big improvement over the hard, flat original.
Another Good Magpul Product
Picked this up for one of my custom builds. Not many people take into account what the material is used on the butt stock. I prefer a material that will grip your shoulder well and conforms to the operator ... basically a molded rubber pad over the end. This is just as important as getting the right sized shoes. The ACS Stock has a very nice butt pad. It grips to the operator well and makes shouldering the rifle more comfortable and can be held in place easier. The end caps for the storage compartment are rubber and are attached to the stock ... this is a plus so you don't have to feel around for them if you drop it in the dark. The cheek weld is nice and comfortable and clears the charging handle with ease. The stock is easy to install if you read the instructions. You cannot simply pull the rocker switch down and slip it on. The instructions show you where you have to insert either a screw driver, bullet or something else underneath the rocker leaver to pry it up to remove. Not necessary a big deal, but it isn't coming off in a hurry. It does lock up tight and is overall a very nice stock. There are only two things that needs improvement. The cheek weld area on the stock I received was not finished very well. It still had rings from were the plastic was in the mold. I had to take some sand paper and finish it off smooth ... if your paying $100+ for a stock this should of already been done. The other issue is unlike the VTOR series stocks; the ACS does not have any plate on the bottom to protect the stock when it is on a tri-pod. The bottom of the stock has a hollow area that looks like a monopod attaches there, but is easy beat up when shooting prone ... a pop in metal plate would of been a great asset there.
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now i can build an AR-15
