Leber v22

• Designed specifically for the HK-pattern MP5 .22LR direct-blowback platform

• Alternative bolt-bounce mitigation system requiring no added bolt mass

• Adjustable system allowing fine-tuning of the anti-bolt-bounce with the firearm assembled

• Intended to minimize setup time and reduce tuning complexity

• Tested using commonly available standard-velocity .22LR ammunition

The Leber v22 is capable of accepting some aftermarket AR15-pattern fire control group upgrades.

This enhanced complete trigger group is intended for use only with HK-pattern MP5 .22LR pistols and rifles manufactured by Walther™ / Umarex™. It is not designed to fit GSG™ firearms, centerfire platforms, or non-HK-pattern receivers.

The Leber v22 is an independently developed design and does not incorporate proprietary files, licensed source materials, or protected designs from third parties.

• Assembled Leber v22 Enhanced Complete Trigger Group with AR15-pattern fire control group utilizing a cross bolt safety selector

• Two carbon-fiber-reinforced nylon sliding recoil buffers

Installation requires replacing the factory buffer with an included sliding recoil buffer. This process requires partial disassembly of the firearm’s action and should be performed in accordance with the provided instructional materials.

No permanent modifications to the host firearm are required to install the Leber v22 Enhanced Complete Trigger Group or sliding recoil buffer. Final tuning adjustments are made using standard Allen wrenches with the firearm assembled and the stock or end cap removed.

The Leber v22 was developed and tested using commonly available standard-velocity .22LR ammunition. Ammunition performance and reliability may vary depending on manufacturer, lot, firearm condition, and user adjustment.

This product is intended for recreational range use only and is not designed for duty, defensive, or professional applications.

1. Legal & Compliance - This product is intended for lawful use only. At the time of publication, this product is not classified as a firearm under U.S. federal law; however, laws, regulations, and agency interpretations may change at any time. Any modification, configuration, or use inconsistent with applicable law is expressly disclaimed. Shipping availability, legal restrictions, and order eligibility are governed by our Shipping & Returns Policy and Terms & Conditions, which are incorporated by reference and apply to all purchases.

2. Installation & Use- Installation is recommended to be performed by a qualified gunsmith or an individual familiar with safe firearm handling and mechanical adjustment procedures. Improper installation, adjustment, or use may result in firearm malfunction, property damage, personal injury, or death. The purchaser and end user assume all risks associated with installation, adjustment, and use of this product. Results may vary depending on host firearm, ammunition, component tolerances, and user setup.

3. Compatibility & Endorsement- Compatibility statements are based on design specifications and testing at the time of publication. GaugeGard (DBA – BIW1) makes no claims of endorsement, sponsorship, or affiliation with any third-party manufacturers.

4. Trademark Notice- HK™, Walther™, Umarex™, and GSG™ are trademarks of their respective owners. Use of third-party trademarks is solely for descriptive and compatibility purposes. No affiliation or endorsement is implied.

We do not ship this product to the following states:CA, CO, CT, DE, FL, HI, IL, MA, MD, MN, NJ, NV, NY, OR, and RI.