Abstract: A sound suppressor for a firearm includes an enclosure enclosing at least a portion of a barrel of the firearm. An intermediate member is coupled to an outer end of the barrel and includes a base member, ring member and a plurality of extension members therebetween. The base member is positioned proximate the intermediate member inner end and includes a through-hole extending longitudinally therethrough. The ring member is positioned proximate the intermediate member outer end. A space between the plurality of extension members forms a chamber. The sound suppressor also includes a flash hider coupled to the intermediate member outer end. The flash hider includes a plurality of baffles extending radially and spaced apart longitudinally from the flash hider inner end to the flash hider outer end, and a plurality of open channels formed between the plurality of baffles. The intermediate member and flash hider are enclosed within the enclosure.

Abstract: A sound suppressor for a firearm includes an enclosure enclosing at least a portion of a barrel of the firearm. An intermediate member is coupled to an outer end of the barrel and includes a base member, ring member and a plurality of extension members therebetween. The base member is positioned proximate the intermediate member inner end and includes a through-hole extending longitudinally therethrough. The ring member is positioned proximate the intermediate member outer end. A space between the plurality of extension members forms a chamber. The sound suppressor also includes a flash hider coupled to the intermediate member outer end. The flash hider includes a plurality of baffles extending radially and spaced apart longitudinally from the flash hider inner end to the flash hider outer end, and a plurality of open channels formed between the plurality of baffles. The intermediate member and flash hider are enclosed within the enclosure.

Abstract: A firearm system capable of easily attaching and detaching an upper receiver and a barrel is disclosed. The upper receiver is operably coupled to a bearing case. A plurality of bearings are positioned on the bearing case for engaging dimpled slots on the surface of the barrel. A spring sleeve is engageable with the biasing member and circumscribes the bearing case, biasing member and bearings. A dust cover is engageable with the spring sleeve. In an engaged state, the bearing case, the spring sleeve, and the dust cover are assembled such that the upper receiver and barrel are substantially aligned.

Abstract: A bolt catch includes an outer member and a body member. The body member includes a void where a biasing member is positioned therein. The body member is normally biased upward and thus blocks the bolt from moving forward and engaging a cartridge from a magazine. The user is required to engage the bolt catch in order to move the bolt forward and load the chamber with a round or cartridge. Thus, the bolt catch converts a semi-automatic firearm into a bolt action firearm.

Abstract: A modular firearm system capable of easily attaching and detaching an upper receiver and a barrel is disclosed. The upper receiver is operably coupled to a bearing case. A biasing member is positioned on the bearing case. A plurality of bearings are positioned on the bearing case. A spring sleeve is engageable with the biasing member and circumscribes the bearing case, biasing member and bearings. A face plate is positioned adjacent to the bearing case and fixedly coupled thereto. The face plate engages the spring sleeve such that the biasing member and bearings are enclosed within the spring sleeve and the face plate. A barrel sleeve is operably coupled to the barrel. In an engaged state, the barrel sleeve is positioned within the bearing case and the bearings are positioned between the barrel sleeve and bearing case such that the upper receiver and barrel are substantially aligned.

Abstract: The technology described herein relates to treatments for, e.g., diastolic heart failure, cardiac hypertrophy, and related conditions.

Abstract: The technology described herein relates to treatments for, e.g., diastolic heart failure, cardiac hypertrophy, and related conditions.