Dealer Login:

Click Here to Become a Dealer

Manufacturer Part #: FMKGAR1EDE
UPC: 850979004260

View High Resolution Image

FMK Firearms, AR-1 Lower, AR-15, Stripped, Polymer Receiver, Dark Earth Color


WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to


"GLOCK” is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. or GLOCK Ges.m.b.H.  Neither RSR Group, Inc. nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H.  The use of “GLOCK” on this page is merely to advertise the sale of GLOCK pistols, parts, or components.  For genuine GLOCK, Inc. and GLOCK Ges.m.b.H. products and parts visit

  • 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."

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.