$400 in store, asking $300, never used. Ramset .277 Caliber Semi-Automatic Powder-Actuated Tool Ramset semi-automatic Cobra+ Powder-Actuated Tool can tackle all professional remodeling projects, such as attaching wood to concrete or steel. The Cobra+ increases job speed and efficiency on your job-site. Semi-automatic .27-caliber tool – uses strip loads Padded recoil-absorbing handle – for greater operator comfort Power adjustable for maximum efficiency Silencer that reduces noises by 30% Ergonomic handle maximizes user comfort Fastens up to 3 standard Ramset drive pins and threaded studs – ideal for general construction applications