MASTER 1:35 M197 three-barrel rotary cannon of 20 mm caliber is a turned metal set of barrels with etched clamps, used on the AH-1 Cobra helicopter. An accessory to a kit, not a model.
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A metal detail accessory in 1:35 scale from the Polish brand MASTER. It contains the turned barrels of the three-barrel M197 rotary cannon of 20 mm caliber supplemented by etched clamps that hold the cluster of barrels together. The M197 cannon is a weapon carried among others by the AH-1 Cobra attack helicopter, where it is mounted in the turret under the nose. This is not a kit: it is a replacement for a plastic part in a model you already own.
A multi-barrel rotary weapon is all but unsolvable for injection-molded plastic. Three barrels side by side have to be the same length, parallel and keep an exact spacing, and any deviation is immediately visible from the front. A plastic molding also carries a parting line and its muzzles are blind. Turned metal barrels have a real bore, hold their diameter along the whole length and do not twist. The etched clamps then fix the spacing and at the same time give the cluster the sharply stepped detail that plastic could not achieve. The assembly also takes being touched during handling without bending.
First try dry how the barrels pass through the clamps, and only then glue anything. Bend the etched parts over a straight edge or in a bender, not with your fingers. Set the clamps at a right angle to the cluster and fix them with a tiny drop of cyanoacrylate applied on the tip of a needle; excess glue will clog the gaps between the barrels. Let the whole thing cure on a flat surface so that the spacing does not twist. Before painting, degrease the assembly with alcohol and apply a primer for metal. The barrels look good after blackening; settled fine dust and smoke marks are then added at the very end, lightly and thinned.
The set is supplied unpainted. The kit, glue and paints are not included in the package.
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