The M1943 field blouse was actually introduced by the German Army during the autumn of 1942 and was adopted by the Waffen-SS about one year later in October of 1943, but with slight modification. SS jackets had a five-button front (as opposed to six for Heer jackets) and double, instead of triple, belt hook eyelet stacks.
The M43 improved on the time and material saving steps introduced with the M42 blouse by finally eliminating the pocket flap scallops and replacing the rounded pocket corners with easier to make sharp corners. The lining was usually shiny 100% rayon "silk", but many examples exist with twill lining. Fabric quality had degraded to the point where 70% of the blend was artificial wool made of cellulose fibers. The change in material was accompanied by a new field-gray shade that contained less green than earlier uniforms. However, the earlier shades of field-gray wool from existing stocks continued to be used on the new jackets.
It gives us a great deal of pleasure to truthfully say that our M43 field blouse is the best available from anywhere for any price. The only way to tell our reproduction from the real thing is the fact that our materials are of much higher quality than than the high rayon, animal hair, and recycled wool fabric used by the Germans in the second half of WWII. Formerly, our M43 was the best available outside of Germany, now it's just the best in the world period, but still very affordable.
We have every detail of construction down. Here's a rundown on why our M43 is so much better than the competition: