Fusion Engine Manifold (V3 Excluded) SOCKS This barb fitting is used

This barb fitting is used universally on all F2

you probably cross-threaded it

In some cases these parts are dimensionally out of tolerance and unusable so they are scrapped for recycling

TM MP5 A/SD

the REV3 FCU is compact enough to fit into a M4's buffer tube along with a small 300mAh Lipo pack

Fusion Engine Manifold (V3 Excluded) SOCKS This barb fitting is usedThis manifold is used with all current production V2, M249, M60 and M240 Fusion Engines. This is the GEN3 manifold which is shorter than the manifold used on GEN1 and GEN2 V2 Fusion Engines but is reverse compatible with those generations. The shorter manifold allows an air line to pass underneath of the manifold and exit under the buffer tube when used with a 90 degree elbow fitting. Compatible with V2 (GEN1, GEN2 & GEN3), M249, M60 and M240 Fusion