AirTac Customs HPA CRBN Upper tk45 A very popular custom stock

A very popular custom stock upgrade for your carbine

This is not a flimsy plastic stock

14mm CCW threaded for use with suppressors and tracer units

**Installation required

This gun is pre-wired for both front and rear

AirTac Customs HPA CRBN Upper tk45 A very popular custom stockHPA CRBN Upper: Lifetime Warranty for breakage defects CNC milled Carbon Fiber and ABS Polymer Genuine Carbon Fiber tube Fiber optic front and rear sights for fast target acquisition Dual hopup windows for on the fly adjustments Perfected drop in fitment on a G&G lower with a Maxx hopup Included Fiber Optics Rods (Green and Red) Available in Glossy Black, Matte Black, Red, Blue, Purple, Silver, and Gold tube colors Compatible with: Polarstar Fusion