Very nice late Model 18-4,
The dash 4 revision moved the gas ring from the Yoke to the cylinder,
The 18-4 was the last Model 18 produced (until its recent revival with IL) and was replaced by the 4" 17-5 Heavy Barrel .
Early dash 4's have a pinned barrel, large right side trademark, standard grooved trigger and came in the blue two piece Bangor Punta box,
Late dash 4's are unpinned with a smaller left side trademark and came in the one piece Lear Siegler folding box,
Usually found with either a smooth combat trigger or wide target trigger.
The late 18-4 is the first version to appear without the machined grooves ahead of the rear site to match the barrel rib .
Late model Magnas are usually lighter in color , have a blocky heel and have thin checkering at the bottom. (Perhaps the router cutting speed was increased to speed up production ?)
My 18-4 is in the 270K serial range, was made in 1983 and has these late features , (Guessing your is slightly lower?)
The box is the folding cardboard Lear Siegler style.
The changes in their design is what makes them so interesting to study and compare.
Thanks for sharing it !
