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 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 compatible with Super Safety–pattern components manufactured to the Hoffman Tactical™ design specifications. Testing has been performed using Super Safety cams from Tactical Titan Supply™ and Z3Pro™; however, compatibility is not limited to those manufacturers.

This lower receiver 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 lower receiver with all required components installed, excluding the Super Safety cam
• Selection of printed carbon-fiber-reinforced nylon levers designed to fit standard Super Safety cam lever channels
• Two printed carbon-fiber-reinforced nylon buffer / adjustable slip-trips

Not included: Super Safety cam (must be purchased separately).

Installation requires replacing the factory buffer with an included adjustable buffer / slip-trip to interface with the Super Safety lever. 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 lower receiver or buffer / slip-trip. Final tuning adjustments are accessible 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.   This product does not, by itself, enable automatic fire or convert a firearm to fire more than one round per trigger function. 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™, Tactical Titan Supply™, Z3Pro™, Hoffman Tactical™, 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.