The way I do it.. I place the piston against a solid surface and push the receiver body. This gets the piston moving straight, back and forth. You may also simply push down on the piston with one hand while holding the receiver body in the other.
Make note to observe the bolt head riding and locking smoothly...
And we have a smooth action ! Really!
To have a finished rifle that is really smooth, you will have to tweek the FCG (fire control group) also.
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Last edited by fredieusa; 07-08-2009 at 2:17 AM..