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Kaiser US X-7 Polymer AR-15 Matched Receiver Set

AR-15 Receiver Set

In stock

FFL Required Before Shipping.

Please have your dealer email a copy of their FFL to [email protected] or fax it to 253-218-2998, referencing your name and order number.

As low as $360.00
Rainier Arms Free Ground Shipping

This product ships from another warehouse location and not available at our retail store. Orders will take an additional 3-5 business days for processing.


Specs and Features:

  • Engineered for durability and increased strength without added weight. 
  • Titanium + aluminum inserts infused with their proprietary composite material.

  • Textured non slip front magwell grip surface designed for better grip and weapon control even in the most extreme conditions. 

  • X-7 Polymer AR-15 Matched Receiver Set with their Proprietary V2 System (Anti-Walk Trigger Pin) and the lightweight Polymer EPC.
  • Designed for dual or Ambidextrous (ambi) safety set up. 
  • Beveled magwell entry allows faster magazine changes. 
  • Matched to increase rigidity between upper and lower receivers.
  • Lighter at nearly half the weight of aluminum receivers sets. 
  • Less Recoil 
  • Require far less maintenance.
  • Forward Assist eliminated.
  • Eliminates harmonics from attached accessories greatly improving weapon accuracy.
  • Compatible with any Mil-Spec drop-in trigger. 
  • Compatible with all Mil Spec and most aftermarket grips. 
  • Used by the top shooters; designed for Sub Minute of Angle (MOA) accuracy 
  • Includes a dust cover door
  • Upper receiver 5 oz
  • Lower receiver 5 oz
More Information
Product Type AR-15 Receiver Set
Manufacturer Kaiser US
Option AR-15
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