does anyone know any reliabilty faults with INCH PATTERN GUNS vs. metric..it was built by gunsmith..its in really good shape.

If it was make with quality parts by a good smith, there shouldn't be any problems.  Even with inferior parts, a good smith should be able to overcome them and still have a reliable rifle.  The only trick with inch kits is the availability of receivers.  You're pretty much stuck with Enterprise which has a spotty record of build quality.  It is also possible to adapt a metric receiver to an inch kit so you may find an Imbel receiver.  Again, its more the skill of the receiver than anything else.

yeah its an ENterprise receiver..its for a buddy of mine that may be buying one..so im jus checkin for him., i appreciate the info..