Bolt Buffer and Firearm

Abstract

Firearms and buffer systems having a second buffer spring or having a buffer spring and a buffer adjusting nut, for instance, to absorb recoil energy, reduce recoil forces, or both. In some embodiments, a first buffer spring is aft of the bolt assembly and a second buffer spring is forward of the first buffer spring, forward of the carrier assembly, or a combination thereof. In some embodiments, a buffer adjusting nut adjusts preload of the second buffer spring, contacts the second buffer spring, or both. In particular embodiments, a buffer weight is located between the first buffer spring and the carrier assembly or the second buffer spring, the first buffer spring is longer than the second buffer spring, the first buffer spring is less stiff than the second buffer spring, the first buffer spring and the second buffer spring have a common axis, or a combination thereof.

Description

RELATED PATENT APPLICATIONS[0001]This patent application claims priority to U.S. Provisional Patent Application No. 61 / 932,874, filed on Jan. 29, 2014, titled BOLT BUFFER AND FIREARM, which has at least one inventor in common with the current patent application and the same assignee. The contents of this priority provisional patent application are incorporated herein by reference. This patent application also claims priority, as a continuation-in-part patent application, to U.S. Non-Provisional patent application Ser. No. 14 / 593,116, filed on Jan. 9, 2015, titled CARRIER GUIDE AND FIREARM, which has at least one inventor in common with the current patent application and the same assignee. The contents of this priority non-provisional patent application are also incorporated herein by reference.FIELD OF THE INVENTION[0002]Various embodiments of this invention relate to firearms. Particular embodiments relate to firearms having bolt buffer springs that reduce recoil forces.BACKGROUND ...

AI Technical Summary

Benefits of technology

[0007]In a number of embodiments, more of the recoil energy is absorbed by the firearm rather than by the operator in comparison with certain prior art alternatives. Further, a number of embodiments are more comfortable to operate, particularly when fired repeatedly. Even further, certain embodiments are smoother in operation, operate with less shock, are more robust, are easier to operate, or a combination thereof, as examples. In a number of embodiments, improvements to fire

Problems solved by technology

Main buffer springs, however, typically have not absorbed all of the recoil of a firearm.

If a main buffer spring is selected to be stiff enough to absorb all of the recoil, the buffer spring has been found to be too stiff to allow the operator to pull back the charging handle to charge the weapon.

As a result, a significant portion of the recoil forces have been absorbed by the oper

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