PolarStar JACK HPA Conversion Kit (V2 / V3) Style:V2/M4 aggressive 7″ MLOK handguard

aggressive 7″ MLOK handguard

The GTP9 is an ergonomic platform featuring a 22 round capacity magazine

steel loading nozzle for enhanced durability

The Arcturus Battlelink Minimalist AR-15 Stock is the perfect aftermarket stock for your rifle

PolarStar JACK HPA Conversion Kit (V2 / V3) Style:V2/M4 aggressive 7″ MLOK handguardThe JACK was designed to answer the demand for an affordable, high performance HPA (High Pressure Air) conversion for AEG's. The system is a drop in cylinder replacement that is universally compatible with a wide range of gearbox versions that have center line nozzles. Similar to its sister products, the JACK replaces the original gearbox components with a programmable pneumatic system allowing for higher performance and greater reliability over a