I seen these this weekend. The LGS said they are more accurate due to the barrel shooting from the bottom cylinder instead of the top one. Then again this is also from the same guy that said the AR 15 threads on the flash hider are 1 1/2-28 threads.... I said don't you mean 1/2-28 and he looked at me like I was the stupid one. One is $1.079 and the other is $1,019