Black Rifle Arms Patents, Charles Cassels Patent, Patents, BRA Patents, Carrier Buffer Patent, Gas Block Patent, Regulated Piston System, Patented Gas Piston, Patent Regulated Uppers, Patented Buffer and Spring, Patent Buffer and Spring Assembly
Charles B. Cassels, the owner and designer of Black Rifle Arms® products, has several patented products or patent-pending product(s). These patented products are exclusive to Black Rifle Arms and are limited to certain OEM's for use.

Due to patent laws, those products that have been issued a patent allowance will be listed below with their patent numbers.

35 U.S. Code ยง 271 - Infringement of Patent:

  1. Direct Infringement
  2. Indirect Infringement
  3. Contributory Infringement
  4. Induced Infringement
  5. Willful Infringement
  6. Literal Infringement
  7. Doctrine of Equivalents Infringement
    • If a device does not literally infringe a patent claim, it may still infringe under the Doctrine of Equivalents

Patents Issued: 

  •        TRADEMARK SERIAL NO.: 86509320