• Rifle-Length Receiver Extension/Buffer Tube
• Mil-Spec 6061 T6 Aluminum with a hard coat anodize.
• Rifle-Length Recoil Buffer -5.2oz

• Rifle-Length Enhanced Chrome Silicon Recoil Spring
• Constructed from certified USA made chrome silicon spring wire
• Heat treated, stress relieved
• Provides consistent spring pressure for hundreds of thousands of cycles (estimated 750,000+)
• Greater resistance to heat & high stress cyclic rates
  
• Improves operation, long-lasting performance
• Consistent pressure reduces bolt bounce
• Significantly reduces the perceived "twang" noise which is common during firing

*photo shows kit w/enhanced spring

Made in USA.