Not the Shockwave, but I have the 20 in. barrel, 12 ga. version. Put a shorter stock on it, and removed the heat shield but no other changes. 9 shot capacity is nice. No issues at all with about 300 rounds thru it. Bayonet lug makes me chuckle every time I look at it. I had read somewhere that magazine fed can be an issue with distorted shells, so i went old school. Imagine that.