chris555 Posted August 4, 2013 Share Posted August 4, 2013 Looking at the ghk akm as a secondry rifel how would you lower the fps on it nost guns seem to come out at 400 fps would need to be 340-350 fps to be useable Link to comment Share on other sites More sharing options...
david0512 Posted August 4, 2013 Share Posted August 4, 2013 All I can think of is either use a less powerful gas or fit an NPAS (Negative Pressure Adjustment System) to it. Other than that, Maybe try a heavier bb? Link to comment Share on other sites More sharing options...
Supporters Qlimax Posted August 4, 2013 Supporters Share Posted August 4, 2013 You could use heavier BB's but Chrono testing is on. 20g bb regardless any Site allowing Chrono to be done on a heavier bb are idiots as heavier bb my reduce the Chrono speed but it will hit and hurt a lot more as your firing an overpowered gun with more weighted bbs in this it You would have to use an NPAS Link to comment Share on other sites More sharing options...
Tariq Posted August 4, 2013 Share Posted August 4, 2013 Or use a less powerful gas. 144a might help Link to comment Share on other sites More sharing options...
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