KWA RM4 and VM4 Upgrades

If you have landed here, chances are you own a KWA RM4 ERG, VM4 or Ronin and are interested in upgrading it. Chances also are that you have found few Airsoft tech's willing to work on the KWA platform because it's often been derided as "100% proprietary" or that "KWA's can't be upgraded!"

I am no stranger to tales of recalcitrant techs and "it can't be done" attitudes. Many of the myths and tales surrounding the RM4 (and KWA rifles) are only half-truths at best and gross ignorance at worst. In truth this platform enjoys much compatibility with standard Version 2 components; current versions, even more so.

Since I started Tactical Parts over nearly a decade ago, I have specialized in upgrading and modifying the KWA RM4 series AEG rifles. I've now expanded that focus into the VM4 and Ronin series rifles. Starting with the introduction of the original PTS RM4 series, I was one of the very first shops to take advantage of this new platform and begin upgrading and modifying it with the goal of superior performance. By now I have amassed considerable experience with this design and am proud to say that I am recognized as an authoritative source for upgrading the KWA platform by many satisfied end users.

The RM4 is a fantastic platform, offering all of the comparable features of a gas blowback rifle, but without the 'Seasonal Affective Disorder'. While many are satisfied with the stock performance of the RM4, I have always recognized that some things could be better: The RM4 is burdened with a terrible bucking design, and proper compression (particularly the air-nozzle) is next to non-existent in stock form. Additionally, AOE correction wasn't even an afterthought, and the thin factory pad on the back of the cylinder head can come loose over time and cause a piston jam. The giant fuse array and clumsy wiring are a handicap when it comes to replacing the front end with different rail systems. On the rear wired versions, the infamous "telephone cord" wire is not much better. The stock motor is adequate - but like the vast majority of AEG rifles out there, it too will benefit from the installation of a Neodymium type motor to improve the ROF and trigger response.

While the RM4 also has some proprietary parts, I have been able to utilize many commercially available Version 2 designs and adapt them to the RM4. The outer barrel is one such proprietary part, but with selective modifications, I can modify and adapt ANY standard Version 2 outer barrel to your RM4! With the introduction of KWA's new Ronin modular rifle system and improved parts support, the options for this rifle have expanded greatly, and now one can enjoy the convenience of multiple "hot swappable" upper receiver assemblies. I have also found this platform to be very accepting of real steel aftermarket components, and many will fit with little to no modification necessary.

Owners of the RM4 need not to be intimidated by the perceived lack of upgrade potential - rather the contrary... the possibilities are endless!

I am pleased to be able to offer the ability to now order the Tier 1 conversions for your RM4 from the website!

Contact me today and we can discuss how to take your RM4 to the next level!