My P522 came with both the sporter stock as well as the sliding stock. The slider is to light (as in not tough) for me and I keep the sporter stock on the gun.
While some models of the P522 come with open sights as well as a rail, mine has no rail. There is one available and I may decide to add it in the future. The open sights are kind of coarse and do not lend themselves to precision shooting. The best I can get out of my rifle, using CCI Blazers, is 1 to 1 and 1/2 groups at 25 yards. I believe the sights are part of the problem but my eyes are mostly to blame. My daughter can shoot the gun with the same sights and ammunition and cut the group sizes appreciably.
The Gsg does seem to require more cleaning maintenance then the AR style .22s. It is more complicated to take down and clean and requtres a couple different screww drivers or allens.
The GSG P522, depending on the model, is the least expensive gun and can be purchased for $350 to $425.
I thinK the gun is worth the money for a fun shooter or small game hunter. I have only about 1000 rounds through mine and once I got the magazine clean and adjusted it ran fine with no problems.
It also attracts attention and questions from others at the range!
The last rifle in the test is the dedicated AR 22 from CMMG.
I purchased mine as a complete upper and matched it with a Plum Crazy Lower.
All controls and functions are the same as any AR. The complete rifle (with the Plum Crazy Lower) weighes about 7 pounds. It has a 16 inch barrel with a 1 in 16" twist.
Over all length is 35 and 3/4 inches with the plum crazy lower and a Vltor sliding stock and recoil pad (again, for increased LOP).
The CMMG magazine is the least preferable magazine. It is made by Ciener and doesn't have a lot going for it. I had to shave off some of the plastic on the spine of the magazines so they would go in and out of the well without sticking. There is no load assist and your thumb will suffer before all 25 rounds are loaded. In fact, I have not been able to get all 25 rounds into the magazine yet!
The magazine problem is easily fixed... the gun takes the same magazines as the S&W MP15-22. These mags fit well, load easily, don't stick, easily hold 25 rounds, and are less expensive!
I know someone will ask, so before they do, I'll explain why I think it is better to buy a dedicated .22 upper than to simply buy a conversion kit to fit an existing AR upper. Shooting non plated (lead) bullets results in plugging up the gas port in the AR barrel... with a dedicated .22 barrel there is no danger of that.
With a dedicated AR 22 you can remove the upper and replace it with any caliber AR compatible upper.
I use a BSA 4X32 scope on my rifle. Using CCI Blazer ammunition it will group (5 shot group) at or under an inch at 50 yards. This is more than enough accuracy for small game or fun plinking.
Of the 3 rifles tested this is the medium expensive... I watched the sales and including the lower put together the complete gun for $450.
All 3 rifles are very nice guns. While basically the same, they all three have differences. If you are considering a rifle of this type I hope this report makes it a little easier to make your choice...
From left to right.. Smith&Wesson MP15-22, Cmmg/Plum Crazy AR22, and GSG P 522 SD.
From Top to Bottom.. S&W MP15-22, GSG P 522 SD, and CMMG/Plum Crazy AR22.
From Top to bottom magazines... S&W MP15-22, CMMG/Plum Crazy AR22, and GSG P 522 SD.