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Made of stainless steel, polished, cylinder with expanded diameter type A, made in CNC machine tools.
Due to the polished surface of the cylinder, friction resistance decreases significantly. The perfect fit of the elements of the set guarantees an extraordinary tightness, increasing the performance of the replica.
The Bore-Up cylinder is a cylinder with an enlarged diameter; Its capacity increases.
It is especially recommended for cooperation with long barrels.
Caution!
Use a piston head and a Bore-Up cylinder head for a Bore-Up cylinder.
