Leber V2 MP5/SP5 and Clone Lower Housing (AR FCG)

Leber V2 MP5 Lower Housing – AR-15 FCG Trigger Pack Compatible
Upgrade your MP5 or MP5K platform with the Leber V2 Lower Housing, a premium drop-in unit designed for compatibility with AR-15 fire control groups (FCG). Engineered for strength, reliability, and a clean HK factory-style look, the Leber V2 fits a wide range of MP5-pattern firearms, including the AP5, SP5, PTR9, and more.
The Leber V2 delivers professional-grade performance with a factory-quality finish.
⚠️ Disclaimer: Due to the 3D printing process, some minor cosmetic inconsistencies may be present. These do not affect strength or functionality, which remain at 100%.
🔧 Built for Performance & Durability
The Leber V2 features a steel cassette-style housing that supports the FCG and selector. Reinforced steel plates at the front and rear remove mechanical stress from the external polymer housing, offering superior durability while preserving a flush, factory HK profile.
An internal steel rear trunnion insert strengthens the rear section, and the integrated grip mimics the original HK trigger pack for improved strength and visual continuity.
Note: Does not include trigger/hammer/safety, safety spring, and detent.
✅ Included Options:
Pre-bent steel FCG cage with rear trunnion reinforcement
Steel reinforcement plates (front and rear interface points)
HK-style integrated polymer grip
TPU buffer for full-size MP5 variants
Complete mounting hardware
✅ Extra Options:
Genuine HK Gen3 ejector and spring (recommended), precision-fit for trigger pack and ejector spring
📦 Compatibility:
Century AP5
Century AP5K
H&K MP5
H&K MP5K
H&K SP5
H&K SP5K
PTR9
PTR9K
Other MP5-compatible clones and receivers
🔫 Recommended Ammo:
For optimal reliability, use 124gr 9mm NATO (unsuppressed) or 147gr 9mm (suppressed). These rounds provide the best cycling and performance in these platforms.
🔧 Original design credited to the S3giu2 development team. Shipped by WTC Arms.
🚚 Shipping & Lead Time:
If in stock, orders ship within 1–3 business days.
If out of stock, please allow 7–14 business days for assembly and shipping.
Upgrade today with the Leber V2 Lower Housing – available now from WTC Arms.