AirTac Monk HPA CRBN Upper 128mm Black

AirTac Monk HPA CRBN Upper:

• Revamped framed design for a sleek new look, compatible with Monk Customs Lowers
• CNC milled Carbon Fiber and ABS Polymer Threads and Sights
• Genuine 3K Twill 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 Monk lower with a Maxx hopup
• Included Fiber Optics Rods (Green and Red)
• Available in Gloss Black, Matte Black, Red, Blue, Purple, Silver, and Gold tube colors

Compatible with:

• Polarstar Fusion Engine (Drop-In)
• F2, Jack, Inferno, N7, Pulsar etc. (Requires CRBN Gearbox)
• G&G polymer (SSG1, ARP9). Metal (ARP556) and Lancer Tactical lowers (drop in fitment, has a gap)
• Monk Customs lowers (drop in fitment)
• MAXX Hopup Chambers (ATPRO, M4P, M4A) and Retro Arms hopup chambers (drop in)
• G&G Stock Hopup, Lancer Tactical Stock Hopup, Prowin Hopup (With modifications)
• AirTac Customs CRBN Gearbox