Sirex
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I have a Benelli M4 so no experience with these clones. But I found this review by TFBTV enlightening. It’s kind of a long watch at 22 and a half minutes but the real info starts at about 6:14.
I like his torture test videos. Now, I take them with a grain of salt, as they are more entertainment, but worth watching. He tested the Black Arms Tactical (failed), Citadel Boss (failed), and the Maverick 88 (passed).