It looks like a coated brass barrel, is OK.
-slight improvement oiver the stock barrel.
-Has too many burrs inside of the barrel, caused my BB's to not shoot until a thourough cleaning.
-not much better than the PE 6.03, I'd much rather that they just make those in a 6.01
-hop-up window has been reported as too narrow.
Rating: [2 of 5 Stars!]