Installing A PolarStar Jack Into An M249
OptimusPrime
08 Mar 2020
Putting an HPA engine into an support airsoft gun can be a good option if you want fewer moving parts and not bothered by having a line tethered to an outside HPA tank. In this video, BattleMonkeys Airsoft shows how to install the PolarStar Jack HPA Engine into an A&K M249.
You can click here to know the parts list that you need to the HPA conversion.