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The Best AR-15 80% Polymer Lower Receiver: The GEN2

Build Your Own AR-15 Rifle with the Best 80% Lower Receiver on the Market

 

AR-15 Polymer 80% Lower Receiver Key Design Features include:

  • AR-15 Magazine well thickened and internal beveled

  • Rear Take-Down Pin area re-design to increase material and fortify part in critical area.

  • Brass Inserts at the Pistol Grips and Buffer Tube Tower

  • Increased thickness at the Buffer Tube Tower

RECENT PRODUCTS
  • This is the ultimate kit for the precision rifle builder.

    Priority shipping to all .308 Kits.

    We machine all parts locally on our UMC-750.

    Genesis .308 Upper Receiver – As described in Individual Product Page

    Genesis .308 80% Lower Receiver – As described in Individual Product Page

    Genesis .308 Jig Assembly – As described in Individual Product Page

    .277 Pin Size for both the Upper and Lower.

    Reminder: The Upper is compatible with High Rails systems and has DPMS Thread Pitch.

    $529.95 $304.95
  • Gen-2 80% Lower Receiver – .308 Lower Receiver

    .308 Lowers: We are in continuous production, lead time on shipping can be between 1-2 weeks or 1-2 days depending on when the order comes in and where we are in production at that time.

    ***NOT COMPATIBLE WITH DPMS GEN2***

    With our new Gen-2 80% 308 Lower Receivers the rifle-building enthusiast is now able to build up from scratch a second Lower which is compatible with the above mentioned manufacturers, many of whom do not offer their Lowers by themselves.
    In this respect, our Gen-2 80% Lower Receiver offer the customer another option, which until now, has not been readily available in the market.

    The Gen-2 80% Lower Receiver creates the option for current owners of Armalite™ 308 rifles to convert their rifles to accept PMAGs® and other SR series magazines. Our Gen-1 80% Lower Receiver required an Armalite® Lower Parts Kit, Armalite™ AR-10A® Bolt Stop, and AR-10A® Magazine Catch. In contrast, we have designed our Gen-2 80% 308 Lower Receiver to accept a DPMS™ Lower Parts Kits, with the exception of the rear take-down pin. Genesis will NOT include Rear Take-Down Pin.

    Generally, this design change not only creates significant cost savings for the customer but also the DPMS™ Lower Parts Kits are more readily available for purchase.

    Visit our FAQs for more information.

    $210.00 $73.95
  • LIMITED EDITION – American Flag Hydro-Dipped Polymer 80% AR-15 Lower Receiver

    We are in the process of Hydro-Dipping these parts right now.

    We will only offer 25 Units Total for this run.

    Next Run will have a different pattern.

    $69.95
  • POLYMER LOWER RECEIVER  – JIG SYSTEM – for the AR-15 80% Lower Receiver

     

    Two Side plates which both indicate on the part in multiple locations and screw together.

    Top Plate press fit into the side plates which allows for the Rough Pass, leaving 1/32” in width and depth for finish pass.

    Fasteners for assembly

    Written Instructions

    $17.65 $10.50
  • Gen2 Polymer 80% Lower Receiver – AR-15

    Polymer Lower Receiver Key Design Features:

    Thickened design in Key areas, including:

    Magazine well thickness and internal bevel

    Rear Take-Down Pin re-design to increase material and fortify part in critical area.

    Brass Inserts at the Pistol Grips and Buffer Tube Tower

    Increased thickness at the Buffer Tube Tower

    Tactile Locator Raised Domes for Trigger Finger

    Jig System – NOW SOLD SEPARATELY:

    Two Side plates which both indicate on the part in multiple locations and screw together.

    Top Plate press fit into the side plates which allows for the Rough Pass, leaving 1/32” in width and depth for finish pass.

    Drill Bits required to complete but NOT Included – Will be sold Separately:

    7/16” End Mill (FCP)

    5/16” Drill Bit (Trigger Pin Hole)

    3/8” Drill Bit ( Safety Selector Hole)

    Watch The Genesis Product Intro Here

    Watch a customer machining / instructional video Here

    DEALERS: Contact us by email: sales@genesiscnc.com or by phone: 1-925-465-1505, to discuss dealer pricing on quantity orders.

    JIG INSTRUCTIONS:

    Watch The JIG INSTRUCTIONS HERE

    $69.63 $31.95
  • UNLOCK MASSIVE SAVINGS BY SOCIAL SHARE ! – BUTTONS AT BOTTOM OF PAGE

    $130.00 $99.95
  • In designing the Genesis 308 Upper Receiver, great care has been taken to ensure a high degree of precision. With special attention taken in the barrel extension area. The precision machining in the face of the barrel extension seat and bore diameter will allow you to build a more precise rifle.

    With our Gen-2 308 Upper Receiver, the current owners of  high-end rifles such as LMT® / KAC™ / La Rue™ / Les Baer™ and Armalite™ now have the option to change the configuration of their rifle to meet their needs. Whether you wish to set it up for competitive shooting, Hunting, or set up a Long Range Precision Rifle without having to purchase a complete new rifle.

    View our FAQs for more information

    $325.00 $289.99
  • Genesis CNC

    Genesis CNC is proud to offer our Gen-2 80% 308 Lower Receiver and 308 Stripped Upper Receiver with the intent to provide the market with increased compatibility and options across the board. Our after market products will allow current owners of LMT® / KAC™ / La Rue™ / Les Baer™/ Armalite™ 308 rifles to add another compatible Upper Receiver and build on their platform. Generally speaking, this has not been a readily available option. In designing the Genesis 308 Upper Receiver, great care has been taken to ensure a high degree of precision. With special attention taken in the barrel extension area. The precision machining in the face of the barrel extension seat and bore diameter will allow the Customer to build a more precise rifle. With our Gen-2 308 Upper Receiver, the current owners of the above-mentioned high-end rifles now have the option to change the configuration of their rifle to meet their needs. Whether a Customer wishes to set up for competitive shooting, Hunting, or set up a Long Range Precision Rifle without having to purchase a complete new rifle.

  • Build That Boom Stick

    With our Gen-2 308 Upper Receiver, the current owners of the above-mentioned high-end rifles now have the option to change the configuration of their rifle to meet their needs. Whether a Customer wishes to set up for competitive shooting, Hunting, or set up a Long Range Precision Rifle without having to purchase a complete new rifle. With our new Gen-2 80% 308 Lower Receivers the rifle-building enthusiast is now able to build up from scratch a second Lower which is compatible with the above mentioned manufacturers, many of whom do not offer their Lowers by themselves. In this respect, our Gen-2 80% Lower Receiver offer the customer another option, which until now, has not been readily available in the market.

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