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Kaiser US X-7 Polymer AR-15 Matched Receiver Set - Grey (BLEM)

AR-15 Lower/Upper Combo

In stock
Special Price $220.00 Regular Price $342.00

***This product ships from another warehouse location and not available at our retail store. Orders will take an additional 2-3 business days for processing, please be aware when choosing your shipping method***

PLEASE NOTE: All FFL items may take up to 4 weeks to ship

*This product is a cosmetic blem*
*Anti-walk pins not included*


  • Engineered for durability and increased strength without added weight. 
  • Injection molded carbon Composite Matl with anodized aluminum inserts at all critical wear points. 
  • 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

FFL Required Before Shipping.

Please have your dealer email their license to [email protected] or they can also fax it in. Please give us a few days to process the information.

More Information
Product Type AR-15 Lower/Upper Combo
Manufacturer Kaiser US
Option AR15