Blueguns Universal Webley Mark IV Training Guns Not Weighted No Light/Laser Attachment Handgun Blue. Each Blueguns Mark IV Training Gun is made from an incredibly durable injection molded polymer to ensure stability and durability with every use. Mark IVs are often considered the "original" version of the Lee-Enfield pattern. This means that they look and feel identical to the originals. The BAX drop-in trigger group operates exactly as they did in the originals. The physical size and configuration of this Mark IV are true to the originals so much so that our engineers have had to make a number of castings to get the trigger group to sit down in the block. Blueguns Mark IVs are a select few that have the original "feel" that the originals had. If you are looking for a more "replica" of the Mark IV then you need to look no further than Blueguns Mark IV reproduction. Specifications for Blueguns Webley Mkiv Period Model: Manufacturer: Blueguns Color: Blue Gun Make: Universal Gun Model: Webley Mark IV Gun Type: Handgun Weighted: Not Weighted Additional Features: Not Weighted Package Contents: Blueguns Webley Mkiv Period Model What firearm models does the manufacturer say Blueguns Webley Mkiv Period Model is compatible with? The manufacturer says that Blueguns Webley Mkiv Period Model is compatible with Webley Mark IVBlueguns FSWEBB: Webley Mkiv Period Model Blue