초록 ▼

A magazine adapter includes a base that is structured to fit within the magazine well of a firearm, and to accept a magazine designed for smaller caliber ammunition than the original firearm. The adapter includes a bolt catch actuator slidably mounted therein. Magazines for which the adapter is inte

A magazine adapter includes a base that is structured to fit within the magazine well of a firearm, and to accept a magazine designed for smaller caliber ammunition than the original firearm. The adapter includes a bolt catch actuator slidably mounted therein. Magazines for which the adapter is intended include an upwardly extending rear projection of the follower, projecting from an opening in the rear of the magazine housing when the follower is in an upper portion of the magazine. When the upwardly extending projection pushes upward on the bolt catch actuator, the bolt catch is actuated, holding the firearms bolt in a rearward position. The magazine adapter thereby facilitates use of the original firearm controls with a caliber conversion unit, or with an upper receiver and barrel combination of a different caliber.

대표청구항 ▼

1. A magazine adapter configured for use with a firearm, the firearm having a magazine well defined by four walls, each of the four walls of the magazine well defining an interior surface, the firearm further having a reciprocating bolt, the bolt being biased towards a forward position and a bolt ca

1. A magazine adapter configured for use with a firearm, the firearm having a magazine well defined by four walls, each of the four walls of the magazine well defining an interior surface, the firearm further having a reciprocating bolt, the bolt being biased towards a forward position and a bolt catch that is structured to hold the bolt in a rearward position, the adapter comprising: a base having a forward end, a rear end, and a pair of sides, the base defining an opening for receiving an upper portion of a magazine therein, the base being structured to be removably secured within the four walls of the magazine well, anda bolt catch actuator slidably mounted within said base, the bolt catch being movable between a lower position and an upper position, the bolt catch being structured to be biased towards its upper position when a follower of the magazine that has been inserted into the magazine well reaches an upper position within the magazine, the bolt catch being structured for operative connection to the bolt catch when the base is secured within the magazine well. 2. The magazine adapter according to claim 1, wherein the base includes a pair of downwardly depending legs, the downwardly depending legs being disposed on opposing sides or opposing ends of the base. 3. The magazine adapter according to claim 1, further comprising a base securing device extending outward from the base. 4. The magazine adapter according to claim 3, wherein the base securing device is a spring-biased plunger, the plunger being structured to abut an interior surface of a wall of a magazine well when the adapter is installed in a firearm. 5. The magazine adapter according to claim 1, wherein the base defines a channel that is structured to removably receive the bolt catch actuator therein, the channel being in communication with the opening in the base for receiving an upper portion of the magazine. 6. The magazine adapter according to claim 5, wherein the bolt catch actuator includes a central section, a transverse guide flange extending outward from the central section, and a longitudinal guide portion extending outward from the central portion, substantially perpendicular to the transverse guide flange. 7. The magazine adapter according to claim 6, wherein the central section includes a pair of substantially parallel, substantially vertical walls connected by a horizontal wall that is spaced from the top of the vertical wall, the horizontal wall being structured to abut the projection of the follower when the follower is in an upper position within the magazine. 8. The magazine adapter according to claim 6, wherein the longitudinal guide portion includes a pair of generally horizontal panels, the generally horizontal panels being structured to receive a portion of a bolt catch therebetween. 9. A magazine adapter configured for a magazine, the magazine having a housing, a lower end, an upper end, an upper portion, a feed opening defined within the upper end, a follower slidably secured within the housing, and a spring, the spring being structured to bias the follower towards the feed opening, the housing further defining a follower portion opening disposed in the upper portion of the housing, the follower further having a projection extending therefrom, the projection being structured to protrude from the follower portion opening when the follower is in the upper portion of the housing, the adapter comprising: a base having a forward end, a rear end, and a pair of sides, the base defining an opening for receiving the upper portion of the magazine therein, the base being structured to be removably secured within a magazine well of a rifle, anda bolt catch actuator slidably mounted within said base, the bolt catch being movable between a lower position and an upper position, the bolt catch being structured to be biased towards its upper position by the projection of a follower of the magazine that has been inserted into the magazine well when the follower reaches an upper position within the magazine, the bolt catch being structured for operative connection to a bolt catch of a rifle when the base is secured within the magazine well. 10. The magazine adapter according to claim 9, wherein the base includes a pair of downwardly depending legs, the downwardly depending legs being disposed on opposing sides or opposing ends of the base. 11. The magazine adapter according to claim 9, further comprising a base securing device extending outward from the base. 12. The magazine adapter according to claim 9, wherein the base securing device is a spring-biased plunger, the plunger being structured to abut an interior surface of a wall of the magazine well when the adapter is installed in the riffle. 13. The magazine adapter according to claim 9, wherein the base defines a channel that is structured to removably receive the bolt catch actuator therein, the channel being in communication with the opening in the base for receiving an upper portion of the magazine. 14. The magazine adapter according to claim 13, wherein the bolt catch actuator includes a central section, a transverse guide flange extending outward from the central section, and a longitudinal guide portion extending outward from the central portion, substantially perpendicular to the transverse guide flange. 15. The magazine adapter according to claim 14, wherein the central section includes a pair of substantially parallel, substantially vertical walls connected by a horizontal wall that is spaced from the top of the vertical wall, the horizontal wall being structured to abut the projection of the follower when the follower is in an upper position within the magazine. 16. The magazine adapter according to claim 14, wherein the longitudinal guide portion includes a pair of generally horizontal panels, the generally horizontal panels being structured to receive a portion of a bolt catch therebetween.