Spike's Tactical set out to offer the best factory lower parts kit on the market! The lower parts kit they came up with exceeds military specifications by a long shot, they also have a much better fit, and finish! 100% made in the U.S.A. with a lifetime warranty.

Kit includes:
  • Rounded hammer and hammer spring (works with all calibers).
  • Trigger and trigger spring.
  • Disconnector and disconnector spring.
  • Stainless steel hammer and trigger pins with black oxide finish. 
  • Safety selector.
  • Safety selector detent.
  • Safety selector spring.
  • Bolt catch.
  • Bolt catch plunger.
  • Bolt catch roll pin.
  • Bolt catch spring.
  • Magazine catch.
  • Billet magazine catch button.
  • Magazine catch spring.
  • Pivot pin.
  • Takedown pin.
  • Takedown/pivot pin springs and detents.
  • Aluminum trigger guard w/spring loaded detent.
  • Trigger guard roll pin.
  • Buffer retainer spring.
  • Buffer retaining pin.
  • Spike's Pro Grip.
  • 1/4x28 Allen grip screw.
  • Star lock washer for grip screw.