Skip to content
  • SHOP THE BEST PRODUCTS WITH US ...
  • Assign a menu in Theme Options > Menus
  • SHOP THE BEST PRODUCTS WITH US ...
Pro-Tactical GunshopPro-Tactical Gunshop
  • Login
  • Cart / $1,090.97 4
      • × BCM Bravo Company Mod 0 complete lower Multi Cal AR-15 BCM4 X-Werks FDEBCM Bravo Company Mod 0 complete lower Multi Cal AR-15 BCM4 X-Werks FDE 1 × $399.99
      • × Aero Precision AR15 Stripped Lower Black 5.56NATO / .223RemAero Precision AR15 Stripped Lower Black 5.56NATO / .223Rem 1 × $106.99
      • × Tactical Solutions X-Ring 10/22 Takedown Receiver Black .22 LRTactical Solutions X-Ring 10/22 Takedown Receiver Black .22 LR 1 × $344.00
      • × Sharps Bros Warthog AR-15 Stripped Lower Receiver Billet AluminumSharps Bros Warthog AR-15 Stripped Lower Receiver Billet Aluminum 1 × $239.99

      Subtotal: $1,090.97

      View cartCheckout

  • 4

    Cart

    • × BCM Bravo Company Mod 0 complete lower Multi Cal AR-15 BCM4 X-Werks FDEBCM Bravo Company Mod 0 complete lower Multi Cal AR-15 BCM4 X-Werks FDE 1 × $399.99
    • × Aero Precision AR15 Stripped Lower Black 5.56NATO / .223RemAero Precision AR15 Stripped Lower Black 5.56NATO / .223Rem 1 × $106.99
    • × Tactical Solutions X-Ring 10/22 Takedown Receiver Black .22 LRTactical Solutions X-Ring 10/22 Takedown Receiver Black .22 LR 1 × $344.00
    • × Sharps Bros Warthog AR-15 Stripped Lower Receiver Billet AluminumSharps Bros Warthog AR-15 Stripped Lower Receiver Billet Aluminum 1 × $239.99

    Subtotal: $1,090.97

    View cartCheckout

  • HOME
  • BROWSE CATEGORIES
    • FIREARMS
      • AR-15|AR-10|AK 47 RIFLES
      • SEMI-AUTOMATIC RIFLES
      • HANDGUN
      • SEMI AUTOMATIC HANGUN
      • REVOLVERS
      • DERINGERS
    • AMMO
      • PRIMERS
      • POWDERS
        • ACCURATE POWDER
      • HANDGUN AMMO
      • RIFLE AMMO
      • SHORTGUN AMMO
      • AIRGUN AMMO
    • ACCESSORIES
      • AR LOWERS
      • AR UPPERS
      • LASERS
      • OPTICS
      • SCOPES
      • SHOTGUN SIGHTS
  • ABOUT US
  • Shop
  • CONTACT US
  • REVIEWS
“Sharps Bros Warthog AR-15 Stripped Lower Receiver Billet Aluminum” has been added to your cart. View cart
Home / ACCESSORIES / AR LOWERS

FMK Firearms AR1 Extreme Black Multi Caliber AR-15 Polymer Lower

$45.19

FMK Firearms AR1 Extreme Black Multi Caliber AR-15 Polymer Lower

$45.19

Category: AR LOWERS
Product categories
  • ACCESSORIES
    • AR LOWERS
    • AR UPPERS
    • Holsters
    • LASERS
    • OPTICS
    • SCOPES
    • SHOTGUN SIGHTS
  • ACHERY
    • ARROWS & COMPONENTS
      • ARROWS
        • Crossbow Bolt
        • Hunting Shaft
        • Pre fletched Traditional Arrows
        • Target & 3D Shaft
        • Youth & Begginer Arrows
      • BROADHEADS
        • Crossbow Broadheads
        • Expandable Broadheads
        • Fixed Blade Broadheads
        • Specialty & Small Game Broadheads
    • BOWS AND ACCESSORIES
  • AMMO
    • AIRGUN AMMO
    • HANDGUN AMMO
    • POWDERS
    • PRIMERS
    • Reloading Brass
    • RIFLE AMMO
    • SHOTGUN AMMO
  • FIREARMS
    • AR-15|AR-10|AK 47 RIFLES
    • DERINGERS
    • HANDGUN
    • REVOLVERS
    • SEMI AUTOMATIC HANGUN
    • SEMI-AUTOMATIC RIFLES
    • SHOTGUN
  • MAGAZINES
  • Uncategorized
  • Description
  • Reviews (0)

FMK Firearms AR1 Extreme AR-15 Poly Lower Features:
The FMK Firearms AR1 lower receiver is a multi-caliber, AR15 Lower Receiver, manufactured in the USA of a high impact proprietary composite polymer. This state of the art polymer provides superior strength, unmatched durability and is extremely lightweight at only 4.3oz compared to competing polymer lowers. The AR1 eXtreme is by far the strongest composite polymer lower on the market today. The key to any AR build is the foundation and on an AR15, that is the lower receiver. This lower is compatible with most current AR15 lower parts kits, grips and stocks, and accepts mil-spec upper receivers up to .50 Beowulf.

FMK AR1 Lower Specifications:
Brand: FMK Firearms
Category: Stripped Lowers
Caliber: Multi-Caliber
Model: AR1 Extreme
Series: Lower Receiver
Type: Lower Receiver
Finish: Black
Material: Polymer
Gun Model: AR-15
Gun Type: AR Platform
Trigger: None
LPK: None

Reviews

There are no reviews yet.

Be the first to review “FMK Firearms AR1 Extreme Black Multi Caliber AR-15 Polymer Lower” Cancel reply

Related products

-23%
Samurai Lower Receiver
Quick View
Out of stock

AR LOWERS

Spike’s Tactical Rare Breed Samurai Stripped AR-15 Lower Receiver

$399.99 Original price was: $399.99.$309.99Current price is: $309.99.
Read more
-27%
Sharps Bros Showdown
Quick View

AR LOWERS

Sharps Bros Showdown AR-15 Stripped Lower Receiver

$299.99 Original price was: $299.99.$219.99Current price is: $219.99.
Add to cart
Aero Precision M4E1 Stripped Lower Black
Quick View

AR LOWERS

Aero Precision M4E1 Stripped Lower Black

$100.09
Add to cart
KE Arms Stripped Lower Black 5.56
Quick View

AR LOWERS

KE Arms Stripped Lower Black 5.56

$128.90
Add to cart
-17%
Sharps Bros Hellbreaker Gen-2 AR-15 Stripped Lower Receiver Billet Black
Quick View

ACCESSORIES

Sharps Bros Hellbreaker Gen-2 AR-15 Stripped Lower Receiver Billet Black

$299.99 Original price was: $299.99.$249.99Current price is: $249.99.
Add to cart
Sharps Bros. The Jack Stripped AR-15 Lower Receiver
Quick View

AR LOWERS

Sharps Bros. The Jack Stripped AR-15 Lower Receiver

$249.00
Add to cart
Aero Precision AR15 Stripped Lower Black 5.56NATO / .223Rem
Quick View

AR LOWERS

Aero Precision AR15 Stripped Lower Black 5.56NATO / .223Rem

$106.99
Add to cart
CMMG Resolute 100 Complete Lower 9mm Accepts Colt Magazines
Quick View

AR LOWERS

CMMG Resolute 100 Complete Lower 9mm Accepts Colt Magazines

$299.99
Add to cart
Our Company

Open Hours

Monday – Friday 9:00 am – 9:30 pm

Saturday – Sunday 9:00 am – 7:30 pm

Address: Youngstown, Ohio,  USA

Tel:  (330) 800-4225

Email:   tacticalfirearms1982@gmail.com

Copyright 2026 © Pro-tactical Gunshop All Right Reserved
  • HOME
  • BROWSE CATEGORIES
    • FIREARMS
      • AR-15|AR-10|AK 47 RIFLES
      • SEMI-AUTOMATIC RIFLES
      • HANDGUN
      • SEMI AUTOMATIC HANGUN
      • REVOLVERS
      • DERINGERS
    • AMMO
      • PRIMERS
      • POWDERS
        • ACCURATE POWDER
      • HANDGUN AMMO
      • RIFLE AMMO
      • SHORTGUN AMMO
      • AIRGUN AMMO
    • ACCESSORIES
      • AR LOWERS
      • AR UPPERS
      • LASERS
      • OPTICS
      • SCOPES
      • SHOTGUN SIGHTS
  • ABOUT US
  • Shop
  • CONTACT US
  • REVIEWS
  • Login

Login

Lost your password?