PolarStar UGS™ Stock System

With the PolarStar UGS™ (Universal Gas Stock) you can now get the performance advantage of a HPA system without needing to be tethered to a remote air rig and still retain the likeness and function of a traditional adjustable AR-15 stock. Compatible with the F2™, JACK™, and Kythera™ cylinder conversion kits as well as other similar HPA cylinder systems on the market.

Its integral regulator delivers performance on par with systems twice its size, with an output pressure range of 40–130psi easily adjusted with a 3/32 allen key and lockable with a standard chrono zip tie. Install the optional High Pressure Spring (p/n 10000692) to boost maximum output to ~200psi.

Configurations

• HPA (2.000"): Designed for 13ci HPA tanks and 2.000" diameter buttstocks. Includes G&P R3 buttstock.
• CO2: Accepts 12g or 33g CO2 Inserts with a Milspec-compatible rail. CO2 insert included.
• Type 1: For M4 receivers accepting 1-3/16"-16 threaded buffer tubes (gearbox modification required).
• Type 2: For traditional TM Spec M4 receivers (receiver and gearbox modification required).

Features

• Simple zip-tie tournament lock
• Adjustable length of pull
• Only 2 o-rings — promoting reliability and ease of maintenance
• Compatible with standard HPA and SLP tanks
• Cross-compatible parts with Micro Reg GEN2 and CGS
• Not compatible with Fusion Engine™

Specifications

• Min Output Pressure: 40 PSI
• Max Output Pressure: 130 PSI (~200 PSI with HP Spring, p/n 10000692)
• Max Input Pressure: 900 PSI
• Outputs: Interfaces w/ Airline (6mm OD x 4mm ID)
• Warranty: 1 Year Limited

HPA Tank, CO2 Cartridges & HP Spring not included.