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FMK Firearms AR-1
California Proposition 65 Warning

This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.

FMK Firearms

AR-1

$59.95
$39.95
Sale Price
Available California compliant

FMK Firearms AR-1, Lower, AR-15, Stripped, Polymer Receiver, Blue Jay Color FMKGAR1ETB

Key Details
Brand FMK Firearms
Manufacturer Part Number FMKGAR1ETB
UPC 850979005649
SKU FMKGAR1ETB
Current Stock 249 available
Quantity Updated Apr 30, 2026 10:20 AM
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Purchase Requirements
  • This product requires FFL processing before pickup or transfer.
  • Age verification is required before checkout completion.
  • California compliance or distributor restriction review may apply.
  • Final availability is confirmed at checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

Manufactured in the USA of a high impact proprietary composite polymer. This state of the art polymer allows for superior strength, unmatched durability and is extremely lightweight. The Ar1 eXtreme is by far the strongest composite polymer lower on the market today. The key to any good project is the foundation and on an AR15, that is the lower receiver. The Ar1 eXtreme comes with a lifetime warranty; and of course, it's Proudly American.

Features
  • Superior strength - Built with proprietary composite polymer to withstand extreme conditions
  • Unmatched durability - When most lowers dent or break the Ar1 eXtreme bounces back to shape
  • Extremely lightweight - 4.30z
  • Accepts all standard MIL SPEC uppers up to .50 Beowulf
  • Compatible with most current AR15 lower parts kits, grips and stocks
  • Unconditional lifetime warranty
  • Custom engraving - The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.""
Specifications
UPC: 850979005649
Manufacturer: FMK Firearms
Manufacturer Part #: FMKGAR1ETB
Model: AR-1
Action: Semi-automatic
Barrel Length: N/A
Capacity: N/A
Finish: Matte Blued
Type: Stripped Lower Receiver