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RL9 Pistol


The Legacy lives on!
The classic lines of the MP5 in a standard configuration ready for you to hit the range. If you want to further envision what your gun could look like, head over to “Build My Gun” and do exactly that. We’ve built the world’s first Roller Lock Builder just for you!
Each gun is hand built in Texas and ready for a lifetime of service.
Each firearm includes:
– Tropical handguard
– 2 30 rd magazines
– SEF trigger housing (safe/semi only)
– Shipped in a custom black tactical case

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SKU RRL-RL9-146 Categories , ,

Not exactly how you want it?

Use our Roller Lock Builder and let us bring your vision to life!


The renown of the Heckler and Koch MP5 operating system in a US produced firearm. Some will argue that any copy is subpar, but when combined with our focus on quality and desire to evolve the platform it’s hard not to love a new custom firearm built here in the USA. The RL9 is built around the legendary roller-delayed system which is known for its smooth operation and reliability. That operation is only made better by precision machined components such as a Cold Hammer Forged (CHF) and nitride treated barrel or the “F” style bolt carrier assembly with a micro polished recoil system. The 100 degree locking piece and new construction extractor further enhance the soft recoil impulse while the classic lines of an iconic subgun are hard to miss.

Not only do we build these by hand for a lifetime of service but for the community we constructed the worlds first Roller Lock Builder so you can physically see the myriad of aftermarket options available for placement on your gun. Or have us build your gun exactly as you put it together online. It’s industry-first innovation combined with world class Legacy and it’s what we do better than anyone else.

Material & Construction


Manufacturer Revolutionary Roller Locks
Caliber 9x19
Operation Roller Delayed Blowback Operated
Muzzle Attachment Dual Capability (Direct Thread and 3-Lug)
Muzzle Thread 1/2x28 TPI (Threads Per Inch)
Barrel Length 8.85"
Length 17 1/2" (Pistol Endcap)
Magazine KCI Gen 2
Case RRL Custom Paisley
Made in the USA!
“Designed in Germany. Perfected in Texas.”™


“F-Style” Bolt Carrier Group

Full Auto Bolt Group equipped with the most advanced features and ready for both semi-automatic fire and registered sear use. We only accept the highest degree of attention to detail and machining capability to manufacture each sub-component. The group is 100% US made and constructed of the finest and most durable material available.

  • F-Style enhanced steel bolt head with steel extractor, spring, roller set and F-style roller plate.
  • 100 degree locking piece constructed from ordnance grade steel.
  • Firing pin and spring.
  • F-Style Full Auto Bolt Carrier constructed of billet ordnance grade steel that is filled with tungsten and heat treated to guarantee performance and reliability.
  • Stainless steel recoil assembly designed to provide longevity for this wear item.

Dual Muzzle Attachment System & Nitride Heat Treated Fluted Chamber Barrel

Each barrel is precision machined and threaded. The combination 3-lug and 1/2 X 28 TPI attachment systems ensure consistent engagement and lock up of an expansive range of suppressors and other muzzle attachments.


Cold Hammer Forged (CHF) chrome molybdenum (CM) chamber fluted barrel finished through the nitride heat-treating process. Each barrel is hand pressed into the trunnion to ensure proper head spacing and provide guaranteed free float accuracy and dependability.

Receiver Assembly

The receiver encompasses the heart of the roller lock system and therefore receives our greatest level of attention to detail during construction. Anything less would require us to compromise in the areas of fitment and function. And because that’s not an option, we take extreme care to ensure only the best receiver makes it past our quality control process.

  • Each receiver starts life as a stamped steel flat produced by the unquestioned industry leader.
  • Every receiver is hand rolled and quality controlled to ensure consistent production.
  • Custom designed and manufactured fixtures are utilized to guarantee a solid work surface.
  • That solid work surface is combined with our state-of-the art welding system for focused hand welding of each and every critical joint.
  • Our welders are the best in their profession. We wouldn’t have it any other way.


4140 ordnance grade steel that is machined to within .0005 tolerance to maintain our exacting standards. This consistency allows us to hand press each and every barrel to the correct headspace and ensure both longevity and the accuracy achieved from the free float effect.


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