Q Honey Badger Upgrade Kit Two-Piece BCG Updated Buffer Spring Spring Plate End Cap Screw Heat Treat Gold/Black. This kit brings earlier rifles up to current spec with a new two-piece bolt carrier group and an upgraded buffer system - the same smarter engineering and smoother operation found in the newer guns. Specifications for Q Honey Badger Upgrade Kit: Manufacturer: Q Color: Gold/Black Finish: Heat Treated Fabric/Material: Stainless Steel Caliber: 5.56x45mm NATO .300 AAC Blackout Gun Make: Q Gun Model: Q Honey Badger Weight: 11.7 oz Features of Q Honey Badger Upgrade Kit Modernizing earlier Honey Badgers with current-generation internals Improving reliability and long-term serviceability Keeping your Honey Badger running to our higher standard of service life Package Contents: Q Honey Badger Upgrade Kit Two-piece bolt carrier Updated buffer spring Buffer spring plate End Cap Screw What firearm models does the manufacturer say Q Honey Badger Upgrade Kit is compatible with? The manufacturer suggests that Q Honey Badger Upgrade Kit is compatible with Q Honey BadgerQ ACC-HB-BCG-2PC-MP-UP: Honey Badger Upgrade Kit Two-Piece BCG Updated Buffer Spring Spring Plate End Cap Screw Heat Treat Gold/Black