All the joins are of high precision and you will not be able to twist the gun a bit. The whole gun is metal made except the upper receiver cover. The weight is carefully calculated and Asahi firearm s M249 is only 200g lighter than the real steel M249 unloaded. And the rear stock is full metal constructed and is welded to the receiver. If you compare the M249 with Marui AEGs and Top M60s, we do think Asahi s gun assembly technology and quality is at least five years ahead.
Conversion is a very difficult job.
Although there is ample space inside the M249, the grip section is a tricky part, as the original grip cannot be used. We have to re-shape the complete grip with lower receiver. Japanese has done conversions on M249 using version 2 gearboxes. We think the version 3 gearbox will be more appropriate. And we have used a AUG hop up unit.