The UBR has an improved locking mechanism, a simple install ,and there is only one size as it uses it's own receiver extension. I installed mine in about 3 mins flat, no shims to screw with.
It also has a storage compartment that is all the rage these days. It is better than my M93 stocks by a long shot and has more adjustment than the CTR.
It also has a storage compartment that is all the rage these days. It is better than my M93 stocks by a long shot and has more adjustment than the CTR.





















































