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(PREORDER) AR MP5-K Lower - AP5-P/ZF5-K/MAC-5K
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AS Designs

(PREORDER) AR MP5-K Lower - AP5-P/ZF5-K/MAC-5K

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$399.99 - $649.99
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Description

PREORDER PRODUCT - BATCH 3 - ETA FOR SHIPPING IS WEEK OF 5/30/25

BATCH 2 - SOLD OUT (ETA WEEK OF 5/19)

We are now offering the ARMP5v3 Clone K Lower fully machined and ready for super safe action! This lower includes:

  • ARMP5v3 Clone K Lower

    • CNC Billet machined from 7075-T6 Aluminum

    • Type III Hardcoat Anodized - Black

    • Markings laser engraved for SEMI - SUPER - SAFE positions (if you do not want the markings, please mention it in your order comments or email us with your order number and we will set aside a few with no markings)

    • This version fits Century AP5-P/AP5-M/Grey Team AP5, Zenith ZF5-K, and MAC-5K. Please see our other listings for any model not listed. This does not fit PTR or H&K! Note: In some of our testing, the Zenith ZF5-K’s bolt has sat a little lower and causes binding against the ejector lever, we can’t guarantee fitment.

  • Custom Ejector Lever - 4140 Steel, Heat Treated, Nitride Coating

  • Custom Ejector Lever Nut/Bushing (4140) and 3MM Bolt

    • WHEN CHOOSING THE FULL KIT OPTION, THE BELOW IS INCLUDED:

    • AS Designs Super Safety - CPM-10V Kit (Curved Trigger)

    • Mil-spec FCG (hammer and springs)

    • Anti-walk Pins

    • AR Grip (Mil-spec included in price, we will offer upgrade options when we are nearing shipping)

    • Slip Trip V4 - 7075-T6 Aluminum

    • Test fit and fired for 10 semi rounds and 30 rounds super safe on our AP5-P

 

If you order the stripped lower, you will need an AR FCG parts kit, the super safety cam and lever, the rounded safety detent, and an AR grip/screw to complete this lower. You will also need an ARMP5 Slip Trip (we recommend the V4 HERE).

If you order the full kit, You don’t need to add anything, this lower comes fully assembled with all parts. You will simply add the slip trip into your upper 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).

DO NOT use the Atrius Super Selektor, it may damage the lower and is incompatible with the Slip Trip V3 and V4.

 

We currently specialize these lowers for use with the Hoffman Tactical Super Safety. If you plan to not use the Super Safety and just use an upgraded AR trigger (i.e. Geissele or similar) with your MP5, we would suggest purchasing from Lee Sporting HERE. Their LS5 product is designed for that use and is high quality.

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

 

The ARMP5v3 was created by s3igu2 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, please visit his Twitter for updates, other designs, and to support his work: https://x.com/UberPoor/

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