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Jan 06, 2026 - 10:31 AM
The kit includes a castle nut and all necessary mounting hardware for the hpa stock. Having all the required hardware included simplifies installation and saves you from having to buy extra parts.
What mounting hardware is included? PolarStar UGS Universal Gas Stock Combo Kit | HPA Air Stock
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Open Jan 06, 2026 - 10:31 AM
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PolarStar UGS Universal Gas Stock Combo Kit | HPA Air Stock
PolarStar UGS Universal Gas Stock Combo Kit | HPA Air Stock 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. I...
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