For those attending the Third Coast Airsoft Operation Iron Knife 2025, Airsoftjunkiez is now taking pre-orders for their custom HPA SR25. These rifles are equipped with the PolarStar F2 engine, but customers can also choose a different HPA engine. The guns are configured for 320–490 FPS with a .20g BB, with a rate of fire of 20–33 BB/s. They feature a full metal upper and lower receiver, a full-length 20mm RIS handguard for easy accessory integration, and a flat-top receiver that is ideal for mounting optics. The rifles also include an adjustable 5-position crane style stock and an ergonomic motor grip. A vertical grip and a battery are included, but other accessories are not.

Third Coast Airsoft's next event, Operation IRON KNIFE, will be a continuous force-on-force operation with no scheduled pauses, to be held at GTI, Barnwell, South Carolina on 19-21 September 2025. Each side will execute out-of-sector missions to gain additional objective points. Camping will be available off-field and free of charge, but ground fires are not permitted.

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