580101 Hammerli Arms Force B1 Magazine Adapter | Fits Ruger 10/22 BX-15 & BX-25
Attach to Ruger 10/22 BX-15 & BX-25 15 and 25 shot magazines for use with Force B1
The Hammerli Force B1 is one of the most innovative toggle-action rimfire rifles on the market, but proprietary magazines can be expensive and hard to find. The Hammerli Force B1 Magazine Adapter (580101) is the factory-authorized solution that allows you to convert your rifle to accept the most popular rimfire magazine in the world: the Ruger 10/22 platform.
Why Install this Hammerli Force B1 Magazine Adapter?
Out of the box, the Force B1 is an incredible machine. However, by swapping the magwell adapter, you gain access to the vast ecosystem of Ruger rotary and stick magazines.
Higher Capacity: This adapter is specifically designed to work with the Ruger BX-15 and Ruger BX-25 magazines, giving you 15 to 25 rounds of capacity compared to the standard 10-round proprietary mags.
Cost Savings: Ruger 10/22 magazines are available everywhere and are significantly cheaper than proprietary Hammerli magazines.
Reliability: The BX-series magazines are known for their reliability in semi-autos and toggle-actions alike.
Compatibility Guide
This Hammerli Force B1 Magazine Adapter is an OEM (Original Equipment Manufacturer) part produced by Walther/Hammerli Arms. It is guaranteed to fit:
Rifle: Hammerli Force B1 (.22LR models)
Installation: This unit replaces the existing magazine well insert in your Force B1 stock. It is a drop-in part requiring no permanent modification to the firearm.
Installation Instructions (Quick Guide)
Switching caliber or magazine systems on the Force B1 is designed to be tool-less and fast.
Safety Check: Ensure the rifle is unloaded and the bolt is open.
Release Magwell: Locate the magwell release latch (typically located forward of the trigger guard).
Swap Housing: Depress the latch to drop the existing magwell housing out of the receiver.
Insert Adapter: Slide the 580101 Ruger Adapter into the chassis until it clicks firmly into place.
Reassemble: Re-seat the receiver and tighten the takedown screw.
You are now ready to run BX-25 mags.
Technical Specifications
Manufacturer: Walther / Hammerli Arms
Part Number: 580101
Material: Impact-Resistant Polymer
Finish: Black
Caliber: .22 LR
Origin: Made in Germany
Frequently Asked Questions
Q: Will this fit the Ruger BX-25 “Jungle Style” double mags?
A: Yes. Because the adapter accepts the standard 10/22 rock-and-lock geometry, it works with BX-15, BX-25, and the BX-25×2 coupled magazines.
Q: Is this a 3D printed part?
A: No. This is the official injection-molded part from Hammerli Arms (distributed by Walther). It ensures factory tolerances and durability.
Q: Do I need to change the bolt?
A: No. The Force B1 bolt works with this adapter. You only need to change the barrel if you are also changing calibers (e.g., .22LR to .22 WMR), but for magazine conversion only, the bolt stays the same.
Fits: Hammerli Force B1 22LR
