The Swiss Arms is much easier to field-strip as well - no special tools necessary, except maybe a round of ammo, if that. Because its so easy to take-down, I can get the Black Special and Carbine both with optics in the same case. When I had my SL8, I found that it was very tall with a scope mounted and took up most of the real-estate in the same case. When shooting from the standing position, I prefer the balance and weight distribution of the SL8 over the Black Special. The stock on the SL8 is more comfortable as well. You can modify the mag well of the SL8 to accept AR mags which is an advantage with the availability of 10 rnd AR pistol mags. The Swiss Arms is limited to 5 rnds AFAIK. I don't know if anyone reloads, but the the Swiss Arms puts quite a crimp in the neck of the brass. Overall, I prefer the Swiss Arms.