Butt Stock Chassis Extention

(No reviews yet) Write a Review


  • Allows use of AR fixed stocks that do not use a carbine buffer tube
  • Black anodized aluminum blending extension
  • Fits PMACA Chassis
  • Integrated locking mechanism
  • Provides a smooth transition from the PMACA chassis to the butt stock


  • 6061-T6 Aluminum
  • Weight: 3.4 Oz
  • Fits PMACA Chassis


 The Butt Stock Chassis Extension blends the transition from the butt stock to the PMACA chassis.  It integrates the locking mechanism typically implemented using a lock ring with two integrated sliding components.