I own one of the Mfour-22's by Chiappa. Palmetto State Armory was giving them away with the purchase of any PSA AR. So $799 for a .223 and a complete .22 as well was intriguing. Once I found out that the Mfour-22 was built on a full multi-caliber lower, I had to get the deal.
The good:
-As I said above, it is built on a full lower. I can take the .223 upper and slap it on the .22 lower and fire. The same goes the other way around.
-Accuracy is good enough. Not 10/22 good, but it can keep a 1" ragged hole going at 25 yards all day long.
-Magazines are almost as easy to find as 15-22 magazines.
-ATI is pro-2nd amendment. They are moving out of New York because of their politics.
The bad:
-On the first range trip, every other round was a misfire. Bang, click. Bang, click. This was with Winchester 333's, Remington, and Eley Match. They recommend a break-in with American Eagle or CCI. Miraculously, I had 300 rounds of American Eagle, so I tried those. Flawless. After 200 rounds Winchester was Bang-Bang Click.
I took it home, and took a small file to the casting errors, edges, and improper wear areas. Now it fires properly with about anything. The bolt wasn't headspacing properly, now it is better.
-There is a bulge in the cases after firing in the feed ramp. The ramp cut-in on the chamber leaves an unsupported area. Cheap ammo can blow out in that area. This is a compromise to increase feed reliablity.
-The lower is polymer. I am not going to say Poly lowers are ****, but I would like aluminum better. Especially on a direct blowback bolt.
So in review, with tinkering, it can be made to work. I still would not count on it to go bang every time, but that is not a huge issue for me with a .22. It will also require a break-in with specific ammo which can be difficult in the current ammo situation. If the Chiappa/ATI was on the shelf next to a 15-22, both at MSRP, I would get the 15-22 every time.
The good:
-As I said above, it is built on a full lower. I can take the .223 upper and slap it on the .22 lower and fire. The same goes the other way around.
-Accuracy is good enough. Not 10/22 good, but it can keep a 1" ragged hole going at 25 yards all day long.
-Magazines are almost as easy to find as 15-22 magazines.
-ATI is pro-2nd amendment. They are moving out of New York because of their politics.
The bad:
-On the first range trip, every other round was a misfire. Bang, click. Bang, click. This was with Winchester 333's, Remington, and Eley Match. They recommend a break-in with American Eagle or CCI. Miraculously, I had 300 rounds of American Eagle, so I tried those. Flawless. After 200 rounds Winchester was Bang-Bang Click.
I took it home, and took a small file to the casting errors, edges, and improper wear areas. Now it fires properly with about anything. The bolt wasn't headspacing properly, now it is better.
-There is a bulge in the cases after firing in the feed ramp. The ramp cut-in on the chamber leaves an unsupported area. Cheap ammo can blow out in that area. This is a compromise to increase feed reliablity.
-The lower is polymer. I am not going to say Poly lowers are ****, but I would like aluminum better. Especially on a direct blowback bolt.
So in review, with tinkering, it can be made to work. I still would not count on it to go bang every time, but that is not a huge issue for me with a .22. It will also require a break-in with specific ammo which can be difficult in the current ammo situation. If the Chiappa/ATI was on the shelf next to a 15-22, both at MSRP, I would get the 15-22 every time.
