The SA Gen 4 scope mount is a big improvement over past models. It's a basic Brookfield design and includes an open area in the rail to facilitate brass ejection. I still prefer Sadlak and some other mounts, but the SA Gen 4 is pretty good considering it's lower price.
I have the 4th Gen. Aluminum mount. About a 150 rounds with it on and so far it's holding zero. Haven't tried removing and putting back on to see if it returns to zero. Maybe on the next trip to the range.
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