A firearm heater system for warming a scope of a firearm. The firearm heater system comprising an upper portion, a lower portion, a pocket portion and an edge portion. The upper portion is attached to the pocket portion. The lower portion is attached to the pocket portion. The edge portion is attached to the pocket portion. The edge portion comprise one or more dial apertures. The one or more dial apertures configured to allow access to portions of the scope. The pocket portion comprise a pocket. The pocket is configured to receive a portion of a hand warmer. The firearm heater system configured to wrap around a portion of the scope and hold a portion of the hand warmer against the scope.

A firearm heater system for warming a scope of a firearm. The firearm heater system comprising an upper portion, a lower portion, a pocket portion and an edge portion. The upper portion is attached to the pocket portion. The lower portion is attached to the pocket portion. The edge portion is attached to the pocket portion. The edge portion comprise one or more dial apertures. The one or more dial apertures configured to allow access to portions of the scope. The pocket portion comprise a pocket. The pocket is configured to receive a portion of a hand warmer. The firearm heater system configured to wrap around a portion of the scope and hold a portion of the hand warmer against the scope.

Systems, methods, and apparatuses are described for accelerating projectiles at high velocity. A barrel may include one or more heaters configured to heat a bore of the barrel prior to launch of a projectile. The barrel bore may be formed in a tungsten sleeve and may be heated to high temperatures. Heat from the barrel bore may be transferred to expanding propellant behind a projectile as it travels through the barrel bore.

A weapon system includes a weapon having a user actuatable mechanical feature. The weapon system includes a heat retaining device coupled to the weapon and covering the mechanical feature, the heat retaining device comprising an access configured to allow a user to actuate the mechanical feature within the interior of the heat retaining device. The weapon system includes an interior pocket within the heat retaining device configured to receive a warming device.