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Buffer and spring assembly for a firearm

  • US 10,317,152 B2
  • Filed: 05/01/2018
  • Issued: 06/11/2019
  • Est. Priority Date: 08/25/2015
  • Status: Active Grant
First Claim
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1. A buffer and spring kit for a firearm comprising:

  • (a) a buffer including a buffer housing defining a sleeve portion, a collar portion, and a shoulder portion, wherein the shoulder portion has a first diameter and the sleeve portion has a second diameter smaller than the first diameter, the shoulder portion being located between the sleeve portion and the collar portion; and

    (b) a helical spring extending between a first end and a second end, the helical spring being configured for mounting to the buffer such that the sleeve portion and the shoulder portion can extend within an interior space defined by the helical spring with the first end abutting the collar portion and with the helical spring being in direct contact with the shoulder portion;

    wherein the helical spring comprises at least three strands of wire that are twisted together to form the helical spring; and

    wherein the helical spring comprises 20 to 24.5 active coils.

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