Lockstep 19™ Kit
The complete Lockstep 19 system for your 1919. It must be installed and function-checked by a qualified gunsmith, or send your gun to us and we will do it.
Not in stock yet, and we don't take pre-orders. Join the waitlist and we'll email you when there's an in-stock date, and again the moment kits are ready.
Your email is only used to send you these updates. We never sell or share it, and every email has a link to take yourself off the list.
Lockstep 19™ Install
We install and function-check the Lockstep 19 in your 1919 in house. Ship your gun to our FFL or bring it in. It goes on our list in the order it arrives, and you can follow every step online.
You get a tracking code and can check where your gun is at any time.
Why Lockstep
The name Lockstep represents the mechanical synchronization between the trigger mechanism and the firearm's operating cycle. Inspired by the engineering legacy of John Moses Browning, the Lockstep 19 brings modern innovation to one of the most iconic machine-gun platforms in American history.
Compatible platforms
- M1919A4
- M1919A6
- M1917A1
- M1917
- M1919
- M1919A1
- M1919A2
- M1919A3
- M1919A4E1
- M1919A5
- M37
Supported calibers
- .30-06 Springfield — 7.62×63mm
- .308 / 7.62 NATO — 7.62×51mm
- 8mm Mauser — 7.92×57mm
Made in house
Designed and built in our Spanish Fork shop.
Installed by the people who make it
Send your 1919 in and we fit it, test it and ship it back.
Track it the whole way
Every install gets a tracking code, so you can check where your gun is without calling.
Important Fitment & Compatibility Notice
Browning 1919 firearms and their variants have been manufactured, rebuilt, and assembled by numerous manufacturers and individuals over many decades. As a result, significant differences may exist in manufacturing tolerances, component dimensions, parts quality, wear, and overall build configurations.
At 2AC, we have invested countless hours into the research, development, testing, and refinement of the Lockstep 19 to create the most universally compatible system reasonably possible.
However, due to the inherent variations between individual firearms, perfect drop-in fitment and hassle-free installation cannot be guaranteed. Some firearms may require additional evaluation or professional fitting to ensure proper compatibility and operation.
Our team is committed to supporting our customers and is available to provide technical assistance and guidance when needed. We simply ask that customers understand these platform-specific variations before purchasing and plan accordingly.
All installations must be performed and function-checked by a qualified gunsmith before the firearm is used.
Questions
When can I buy a kit?
They are not in stock yet, and we do not take pre-orders. Join the waitlist above and we will email you when we have an in-stock date, and again when kits are ready.
Will it fit my 1919?
Yes. It fits the platforms and calibers listed above, and it works with both spade and paddle style triggers. 1919s vary a lot from gun to gun, so some need extra fitting. Message us with what you have and we will help.
How do I send my 1919 in?
Hit Send us your 1919. You get a reference number to print and put in the box, and an email when it arrives.
Can you ship to my state?
Some states restrict trigger reset systems. Tell us where you are and we will confirm before you order.
Is the design protected?
Yes. The Lockstep 19 is patent pending.