PISTOL: SHARPS BROS MODEL HELLBREAKER PISTOL, SERIAL NUMBER H08641, SEMI - AUTOMATIC, 300 BLACKOUT, OTHER, CASE NOT INCLUDED, 8 Notes: Sharps Bros Hellbreaker Lower with Maxim Defense Brace. Odin Works Upper with CMMG 300 Blk 8 inch barrel. Drop in 2.5lb flat trigger. Strike industries parts. Adjustable gas block. BCG is cerakoted with DFL200. Custom ODG with battleworn cerakote.