
Constructed with rugged materials that withstand the rigors of outdoor use, our brass catcher features a user-friendly design for quick and easy attachment. The reliable mechanism captures spent cartridges without hindering your shooting performance, offering a practical solution for both training and serious competitions.
Works with right hand and left handed actions
Flip the side rail and top rail to reverse mounting side
Magnetic attachment for quick detach/attach for fast access to ejection port or confined shooting position
Brass Catcher can be stored magnetically on the M-Lok rail or on the magnetic belt holster.
Belt attachment has MOLLE support as well.




At Why Knot Innovation, we specialize in designing cutting-edge brass catchers, firearm and reloading accessories.
Our mission is to make shooting and reloading easier and more efficient, allowing enthusiasts to focus on what they love: precision shooting and the great outdoors. With a deep understanding of the needs of competitive shoo
At Why Knot Innovation, we specialize in designing cutting-edge brass catchers, firearm and reloading accessories.
Our mission is to make shooting and reloading easier and more efficient, allowing enthusiasts to focus on what they love: precision shooting and the great outdoors. With a deep understanding of the needs of competitive shooters, we pride ourselves on our reliable, proven solutions that keep your shooting running smooth and efficient.
Common Questions, Answered
Connect the M-Lok or Key Slot rail to your hand guard. Ensure that the distance is close enough to align the magnetic mount forward of your ejection port.
Connect the magnetic brass catcher hood to the mount and adjust the alignment (height, forward/aft and left/right to align to forward opening of ejection port.
Test with an empty brass in chamber to verify that capture of spent brass is working well. Look for a smooth ejection pattern capturing brass via the hood and cloth basket.
It is compatible with Flat M-Lok rails and Accuracy International Key Slot rails.
MPA Matrix Pro recessed M-Lok rail support is coming soon...
Our brass catchers typically range from $100.00 to $135.00 depending on options.
Accuracy International are very proud of their key slot bolts which drive the price up a bit for key slot rail.
Cleaning your brass catcher is simple. You can wipe it down with a damp cloth.
While it can the primary use case is for higher volume training and competition use.
Common use case is for PRS and NRL style training and matches.
Yes it works great with AR platforms with flat mlok rails
For inquiries about our innovative brass catcher designed for bolt-action rifles, reach out today.
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