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IPM4D Stripped Lower - 416D Replica!

**IMPORTANT NOTE:  This product may only ship to an active FFL dealer.  This order will not ship until we are provided your FFL's information.  After purchase, please email FFL@illinoisprecision.com your FFL dealer's info (copy of their license and shipping address).

Or, have your FFL dealer email us at FFL@illinoisprecision.com with their info on your behalf. 

Please use your order number as the subject in the email.**


Introducing the IPM4D, a 7075-T6 aluminum lower receiver designed for HK416D style builds, including the 416C and M27 platforms. Manufactured entirely in-house and backed by more than 30 years of machining experience, the IPM4D combines premium materials, precision manufacturing, and exceptional value. We openly publish material specifications and maintain direct oversight of every stage of production, giving builders complete confidence in what they're purchasing.

 

Features:

 

  • 100% precision machined in-house (including magwell broaching!) from U.S. prime 7075-T651 billet aluminum stock.

 

  • Meticulously detailed to replicate an authentic HK416D exterior, even down to the safety selector engravings.

 

  • Highly functional/modern internal magwell flaring - compatible with the Magpul D60!

 

  • "M16" trigger pocket.

 

  • Compatible with HK 416 & MR variants & "mil-spec" AR-15 upper receiver groups.

 

  • Trigger and LPK spec'd around Geissele Automatics parts - the best on the market and what we build our firearms with.

 

  • Our manufacturer required engravings are sized and located as inconspicuously as legally possible.

 

  • Variations of clone markings are also available as an option!  416D, 416C, M27 - anything you want - we can make it happen!  Our clone markings have had countless hours of editing & creation to ensure they look as correct as possible, both in font/sizing and location on the receiver.  If you are also sending in an upper for color match, this service will be included unless you specify otherwise.  If you'd like your upper to receive its OEM markings, no need to worry!  Our files are so accurate that we can overlay the original proof marks - no need to "erase" them. 
  • The optional "88-000000" or USMC style serial markings can be customized to your liking!  If you select "Add Custom Marking" and want to customize your "serial" number, let us know what you would like in the "notes" section during checkout or via a follow-up email!  *Otherwise we will generate a random clone-appropriate number for you*

 

  • ALL receivers are fully inspected and measured for quality control

 

There is a manufacturer's guarantee from us that this receiver meets the functional blueprint of a "mil-spec" AR-15/416.  In the event that a non-conforming receiver does leave our facility, an RMA will be issued, and we will make things right.

 

Our receivers (in any color) will come standard with a Cerakote finish.

 

We have many years of experience professionally applying Cerakote and despite it being more costly than anodizing, we have identified some key advantages to enhance our customers' experience, which is our #1 goal:

 

  • This enables us to fulfill new orders (or warranty repairs) more quickly,
  • Full control of the color consistency,
  • Custom color options (the sky is the limit!),
  • Offer color-matching for other components (upper receiver, receiver extension, etc. - email us for more details and pricing!),
  • And the capacity to quickly refurbish worn parts (email us for details and pricing!).  

 

(Black, OD Green, Flat Dark Earth, and our "Tanodized" colors are pictured above)

 

Limited lifetime warranty on the Cerakote finish - this does not cover normal use or obvious abuse.  For example: marring, scuffs, scratches, fading, etc. are normal for any firearm finish to experience with use and is NOT covered under warranty.  "Large" chipping or flaking of the coating is NOT normal, and happens due to improper application and/or contamination, and WILL be covered under warranty.  

 

An important note about materials and surface finishing:

 

A surface finish can enhance appearance, wear resistance, and corrosion protection, but it does not compensate for inferior base materials. That's why every IPM4D receiver is machined from premium 7075-T6 aluminum. We're committed to complete transparency and will gladly provide the Material Test Report (MTR) for the aluminum used in your receiver upon request.

 

Older Gen 2 pmags will require light modification for clearance with the 416D magwell's profile.  Factory HK 416 / MR556 mags, G.I. metal mags, Gen 3 Pmags, D60, Lancer AWM, are all good to go (if they are in-spec).

 

Our lowers are in constant production - this is not a pre-order.  Please allow approximately 3-5 business days to process stripped lower orders.  Additional parts/items, customizations, and/or laser services with stripped lower orders will often take longer to complete.  Lead-times will vary.

Thank you for understanding!

    $400.00Price
    Quantity
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