G43/K43 GAS SYSTEM, COMPLETE KIT (RESTOCK COMMING,LATE MAY 2025)

This a newly manufactured replacement gas system for the G43 and k43 WWII German semi automatic rifle. It was reverse engineered from a late 44 variant. The piston is threaded and comes with 5 pre-drilled plugs to help adjust blow back.

We "HIGHLY" recommend replacing the "entire" gas system to keep your originals safe. There were other styles of gas system parts, and sometimes an individual part may not be compatible.

USE ALL THE PARTS IN THIS KIT TOGETHER- THE OVERALL LENGTHS ARE HELD TO CLOSE TOLERANCES SO THERE IS PROPER SPACING BETWEEN THE TIP OF THE OP ROD, AND THE BOLT CARRIER. LESS THAN .5 MM - MORE THAN THAT CAN CAUSE HAMMERING OF THE OP ROD TO THE BOLT CARRIER, WHICH WILL CAUSE UNDUE STRESS, AND POSSIBLE HARM TO THE RIFLE.

There may be instances where there is still op rod to bolt carrier space, if so contact us so we can explain how best to "shim" your gas system parts to eliminate the gap.(tmannn34@aol.com)

Here is a brief description of the individual parts... 

Cylinder: This is a reproduction of the later war design with a 2 pc cylinder(type 3).This cylinder is made from 1144 steel, and 4130 tubing also has vent holes through the side for release of excess gas pressure. 

Piston: The gas piston is made of quality stainless steel. copied from an original in every detail. Yes, the threads fit the gas block correctly so there should be no more stripping out your block! The end is tapped to a standard metric size to fit the gas restrictor plug.(m6x1.0- 8mm long)

Connecting Rod: The connecting rod is made of 1144 steel. 

Op Rod: The op rod is also made of 1144 steel. The tip of the rod is spot heat treated so it will not mushroom out after extended use.(approx. 45-50 Rc) 

How to identify this reproduction: As these so closely match originals It was best to mark them in a way to prevent their resale as originals. The piston marked "ktt" with a year. Also may be un-marked.

 Spring is newly manufactured, with correct length and coils per inch. As of late 2023 these are now Wolff gunsprings made, our local spring manufacturer was unable to hold at our requested tolerances.