4-6 WEEK LEAD TIME FOR BUILT LOWERS.

We are now offering the AR MP5 Lower fully machined and ready for super safe and ARC-Fire action! This lower will fit PTR MP5 full size models. This kit includes:

ARMP5V3 PTR Lower
- CNC Billet machined from 7075-T6 Aluminum
- Type III Hardcoat Anodized - Black
- Markings laser engraved for SEMI - SUPER - SAFE positions for Super Safety or SAFE - SEMI - ARC for ARC-Fire
- This fits PTR MP5 full size, including 9CT, 9C, and 9RS. This also fits "HK94 Shelf" guns. Please note: We do not guarantee fitment on all "HK94" type MP5s from other OEMs, but most have fit.
Custom Hammer - S7 Tool Steel, Black Phosphate, AR-15 Mil-Spec Fitment
Custom Ejector Lever Nut/Bushing (4140 Steel) and 2x 3MM Screws
Custom Ejector Lever
AS Designs Super Safety - CPM-10V Kit (Curved Trigger) OR AS Designs ARC-Fire Kit
Mil-spec FCG (disconnector and springs)
Anti-walk Pins
AR Grip (Mil-spec A2)
Slip Trip - 7075-T6 Aluminum - Type III Hardcoat Anodized Black
Test fit and fired for 5 semi rounds and 25 rounds super safe on our 9RS

You don’t need to add anything, this lower comes fully assembled with all parts. You will simply install the slip trip on the bolt carrier and pin the new lower on and enjoy a super safe MP5! Note: We cannot guarantee perfect fitment to every single host, tolerance stacking is always a concern, but we have done everything possible to ensure proper fitment.

We strongly recommend using anti-walk pins (NOT anti-rotation).

If you plan to not use the Super Safety and just use an upgraded AR trigger (i.e. Geissele or similar) with your MP5, these lowers will work for that usage as well. It is not compatible with cassette triggers though.

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

Note: All products are recommended to be installed by a qualified gunsmith.

The ARMP5V3 was created by s3igu2 (with our support) and his approval was given for our product. Please visit his Twitter for updates, other designs, and to support his work: https://x.com/s3igu2

Credit also goes to UberPoor for his original work on the ARMP5 lower that inspired this product, please visit his Twitter for updates, other designs, and to support his work: https://x.com/UberPoor/