These have individual cylinder barrels, so access as a monobloc is less restricted than on inline engine.
What is much more important, the wide-open true cylinder barrel vastly improved my mediocre skill as a wingshot.
The cylinder barrel is mostly made from a seamless tube.
The cylinder barrel is ground and/or honed internally with a typical surface finish of 4 to 16 microinch.
The front rod gland is usually threaded into or bolted to the cylinder barrel.
Instead, the piston is the short, cylindrical metal component that separates the two parts of the cylinder barrel internally.
Although this varies from gun to gun, steel loads in an improved cylinder barrel might produce full choke results.
The MZ 34 and 35 both have a cylinder barrel that is Nikasil-coated.
The self-stabilizing shape allowed it to be used with bore cylinder or improved cylinder barrels.
It was called "air-oil cooling," and used engine oil to take heat away from the jackets around the cylinder barrels.