Rob Allen Aluminium barrels are made from aircraft grade aluminium and hard anodized to increase it’s resistance against corrosion and wear.

The barrels are fitted with a semicircular shaped rail along the full length of the barrel.

The internal diameter is in the range of 26.2mm, outside diameter at 29.2mm with a wall thickness of 1.5mm. These dimension will vary a little.

These barrels are pre-fitted with plugs for the purpose of buoyancy but not drilled. To clear the handle spigot the plug has been inserted at 65mm whilst the other end has a clearance of 35mm for your muzzle.