Leber V2 MP5 Lower Review | AR‑15 FCG Compatible Housing
- John Robinson
- Aug 1
- 2 min read
🛠️ Introducing the Leber V2 – AR‑15 Fire Control Lower for MP5/MP5K
Launched March 6, 2025 by designer s3igu2, the Leber V2 is a ground‑up redesign of earlier ARMP5/Leber V1 models. It's purpose‑built to accept AR‑15 fire control group (FCG) components and deliver high performance in a reinforced housing system X (formerly Twitter)+13Odysee+13Odysee+13.
🔍 Why Leber V2 Stands Out
🌟 Key Features
Complete compatibility with standard AR‑15 FCG, including triggers, hammers, and disconnector OdyseeOdysee.
Steel-reinforced SCS mounting plates and trigger housing, dramatically improving durability over V1 and preventing cracking Falador Design.
Super‑safety compatible, enabling forced reset operation and safer operation with suppressors Falador Design+1X (formerly Twitter)+1.
🧩 Design & Build Improvements
A refined grip angle and internal ergonomics optimized for improved handling Odysee+5Falador Design+5Odysee+5.
Modular slip-trip design (beta v3 iterations) for customizable fire rate and smoother cycling Odysee+6Reddit+6Falador Design+6.
🧰 How to Install Leber V2
Download the Leber V2 assembly guide (available March 5, 2025) on Odysee to walk through fitting and parts layout X (formerly Twitter)+12Odysee+12Odysee+12.
3D print or purchase housing in PAHT or PPA (or order steel-reinforced kit via Falador Design), then install your AR‑15 FCG into the steel SCS plates Falador Design.
Add a slip trip (v3 recommended), buffer spacer, and springs as per instructions to dial in firing characteristics Odysee+8Falador Design+8Reddit+8.
💬 Community Feedback & Beta Insights
On r/MP5, early beta testers highlight:
“Leber v2 is a completely reworked system … holds the tension … far longer than V1”“It should slow down your rate of fire … keep you from getting roller dents with suppressor & brace builds.” Reddit
Enthusiasts mention that transitioning from V1 to V2 allows reuse of many earlier components, simplifying upgrades.
🧠 Who It’s For
The Leber V2 is perfect for:
Builders aiming to convert MP5 or MP5K platforms to run standard AR‑15 FCG.
Anyone looking to upgrade durability and reliability beyond current 3D printed lowers.
Enthusiasts wanting super‑safety functionality and full forced‑reset capability.