As with all RB Model barrel sets there are no instructions or fancy packaging, just the parts in a zip lock plastic bag and a simple B&W label which is not really a problem with this barrel as assembly is very straightforward.
The set has the single brass barrel tube which includes the flash suppressor and two small etched brass parts for the flash suppressor retaining bolt. There is some cleanup needed to remove the many brass burs inside the flash suppressor but these come away easily using a 1mm drill bit but the holes are a little uneven in places although not that noticeable.
There are two small etched retaining bolts to add to the flash suppressor neck but you only use one of these with the second in case you loose the other as they are quite small.
Close-up of perforated flash suppressor
Dimensionally this barrel is all but identical to the armorscale KwK30 barrel (set #B35-027) and the 1:35 plans in the Panzer Tracts No.2-1 Panzerkampwagen II Ausf.A-C indicates the barrel is about 1mm short and the flash suppressor is slightly undersized.
The barrel features nice contours and the muzzle flash suppressor is fully hollowed out with the small rows of holes but doesn't have the textured hand grip barrel segments or the larger open holes around the flash suppressor neck as included on the recent KwK30 barrel from Lionmarc/Passions Models (set #LM10027)
Note lack of larger holes in the flash suppressor and now textured hand grips along the barrel.
Fitting the barrel to any applicable kit is very easy by drilling a 2mm locating hole for the metal barrel into the kit mantlet and the metal barrel then simply replaces the kit barrel. On the recent Dragon or Tamiya Panzer II kits with the full 2cm cannon you simply cut off the barrel, drill the 2mm hole in the receiver and fit the metal barrel.
Lionmarc/Passion Models and RB Model barrels.
Recommended only just if you can't get hold of the Lionmarc/Passion Models barrel.
Thanks to Leo at LionMarc Model Designs who now carry the full range of RB Models barrels for the review set.