The P38 concept was accepted by the German military in 1938 but production of actual prototype ("Test") pistols did not begin until late 1939. The first designs submitted to the German Army featured a locked breech and a hidden hammer, but the Heer ( German Army) requested that it be redesigned with an external hammer. The P38 was developed from the Walther AP ( Armee Pistole/Army pistol). Drop in barrels do not require fitting on any surface, they are manufactured to factory dimensions on all locking surfaces and provide outstanding function and performance.Development File:Walther Model AP 1 AdamsGuns.jpg This issue can be exacerbated with the conversion as the 9MM provides less impulse than the 40 caliber round. The reason for this recommendation is that coupling the increase in recoiling mass of the suppressor with an extremely tight fitting barrel may result in cycling issues. We recommend customers to select the drop in option when ordering threaded barrels for suppressor use. Fitting only requires your slide to be sent in and will not add to the lead time of your order. Our National Match fitted barrels provide the tightest lockup that can be achieved while maintaining the functionality of your pistol. FITTED VS DROP-IN WALTHER CONVERSION PISTOL BARRELS Customizable options include right and left-hand threads for suppressor use, extended length, and ported options for reduced muzzle rise. The conversion requires 9MM factory magazines which are also available on our website for purchase with the conversion barrel. The Walther 40 to 9MM Conversion Barrel is compatible with the P99, PPQ M1, and PPQ M2 40 caliber pistols in all lengths including Compact, 4″, and 5″. CUSTOM WALTHER CONVERSION PISTOL BARREL MODELS WE OFFER With honesty and integrity, we strive to serve our customers to the best of our ability on a daily basis. we believe that our experience and attention to detail are producing the finest aftermarket Walther pistol barrels available. Every process, from drilling and rifling, to turning and milling is carried out by our experienced machinists and gunsmiths.Īt Jarvis, Inc. This button rifling process produces a mirror like 4 to 6 micron finish. 0005″ tolerances and do not vary over the length of the barrel. Our proprietary rifling process is done by rifling machines designed by us to ensure bore and groove dimensions are held to. This carbon steel provides outstanding strength and thermal characteristics which provide phenomenal longevity and performance under thermal and tensile stresses. All of our Walther conversion barrels are manufactured from 4140 Gun Barrel Certified Steel manufactured in the USA. What separates us from the pack? It starts with steel. Our extensive background in manufacturing and gunsmithing has made us the industry standard for aftermarket barrels. We do not compromise, and we demand perfection from ourselves because we believe that’s what our customers deserve. For almost 40 years we have been the leader in precision and accuracy. After thousands of rounds of testing, the conversion proved to function flawlessly and deliver the same accuracy that our barrels are known for. With no part swap outs required except for the barrel and magazines, the switch from. The Jarvis 40 to 9MM Conversion for the Walther line of pistols is the first conversion of its kind. WHAT YOU NEED TO KNOW ABOUT OUR CUSTOM WALTHER CONVERSION PISTOL BARRELS