Geissele Automatics GFR 6mm ARC Stratomatch AR-15 Rifle - Luna Black - 20"

Manufactured by Geissele Automatics
SKU: 08-379LB
MPN: 08-377LB
Manufactured by Geissele Automatics
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$3,299.99 $3,700.00

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Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal-Firearm License holder.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers.
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to



Introducing the GFR 6MM ARC Stratomatch Rifle in Luna Black, a pinnacle of firearm innovation brought to you exclusively by Geissele Automatics. Crafted from the ground up, this rifle represents the next level in AR15 technology.

Featuring a 20” 416R stainless steel cut-rifled barrel with specially designed feed ramps for the 6MM ARC cartridge, the GFR Stratomatch rifle ensures reliable chambering and projectile integrity. The extended barrel extension enhances accuracy by providing a sturdy connection between barrel and receiver.

Engineered for optimal performance in any condition, the rifle boasts an optimized gas system and Geissele Strato Gas Block. The exclusive GFR-E trigger delivers a smooth first stage and crisp break, even after heavy use, thanks to Nanoweapon Coating enhancing corrosion resistance.


  • Chambered in 6MM ARC
  • Luna Black finish
  • 16.5” MK18 Center Tab (Luna Black)
  • GFR-E Standard M4 Bow Trigger
  • 20” Cut Rifled Barrel 5R
  • Rifle Length +1 Gas System
  • Geissele Strato Gas Block, .812
  • Geissele Super Charging Handle
  • Geissele Swavvy muzzle brake
  • Super Configurable Safety Selector
  • Premium Mil-Spec 6 position Buffer Tube
  • Super-42 w/ H2 Buffer
  • Magpul PRS Lite Stock
  • Geissele A17 Reduced Angle Grip

At the core of the rifle lies the Nanoweapon Coated 6MM ARC Reliability Enhanced Bolt Carrier Group (REBCG), offering increased corrosion resistance, stability, and cartridge-feeding performance. The bolt is forged from Carpenter 158+ steel for superior strength and durability, ensuring reliability even with hotter loads.

The upper receiver features heat-treated steel cam races for prolonged lifespan and precise tolerances. With a relocated forward assist and ambidextrous charging handle, operation is smooth and intuitive.

Equipped with a Swavvy muzzle brake for enhanced accuracy and reduced recoil, the rifle also features a MK18 Super Modular Rail for secure accessory mounting. The precision-machined lower receiver includes high-quality Geissele parts and a Super 42 Buffer system for a smooth shooting experience.

Completing the package is the Magpul PRS Lite Stock, offering stability and adjustability for optimal comfort. With its superior craftsmanship and cutting-edge features, the GFR Stratomatch Rifle sets the standard for precision match rifles.

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Barrel CoatingStainless Steel
Barrel ContourHeavy
Barrel Length20
Barrel LiningStainless Steel
Barrel Material416R Stainless Steel
BrandGeissele Automatics
Caliber Gauge6mm ARC
FinishHardcoat Anodized
Gas System LengthExtended Rifle
Gas System TypeDirect Impingement
Handguard16.5 in M-LOK Rail
Magazine Capacity10
Muzzle DeviceMuzzle Brake
Thread Pattern5/8 X 24
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

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