levels.svg levels icon sort-down.svg sort down icon sort-up.svg sort up icon search.svg search icon user-circle.svg user circle icon cart-alt.svg cart icon plus.svg plus icon chevron-left.svg chevron left icon chevron-right.svg chevron right icon phone.svg phone icon zoom-in.svg zoom in icon
Swipe for More

Geissele GFR (Geissele Freedom Rifle) Semi-Automatic 6mm ARC AR-15 Rifle, 16" Barrel, 8+1 Capacity - 05-1521S

MPN: 05-1521S  |  UPC: 810081130790


Geissele Automatics 05-1521S: The Geissele Freedom Rifle (GFR) 16” Recce features the latest weapon technology, available exclusively from Geissele Automatics. Designed and Engineered from the ground up, the GFR is the next evolution of the AR15 platform.

The 6MM ARC GFR Recce barrels are Chrome-lined, precision machined, and cold hammer forged using the highest quality materials to ensure consistency and quality. Geissele's barrels undergo High-Pressure Testing (HPT) and Magnetic Particle Inspection (MPI) to ensure accuracy and reliability. Geissele CHF barrels are an excellent choice for duty weapons, competition guns, and everything in between.

Geissele’s Anti-Strike Super Compact Gas Block is a modified gas block and was developed for the USG to give more clearance between the gas block and rail. This allows the rail to deflect further in a drop without striking the gas block, which increases the life span of the rail overall.

Geissele's GFR platform of rifles features the exclusive GFR-E trigger. This trigger is an enhancement of the SSAE trigger with a standard M4 curve. Engineered with precision in mind, the GFR-E provides the smooth first stage and predictably crisp break shooters have come to expect from a Geissele two-stage trigger. Even with minimal lubrication, Geissele's proprietary Nanoweapon Coating enhances corrosion resistance, keeps the fire control group running smoothly, and breaks cleanly — even after heavy use.

At the heart of the GFR platform is the Nanoweapon Coated 6MM ARC Reliability Enhanced Bolt Carrier Group (REBCG) with features that provide increased corrosion and wear resistance, increased carrier stability, and optimized cartridge-feeding performance. The 6MM ARC REBCG has a chrome lined gas key with properly torqued and staked screws, advanced tool steel cam pin, extended carrier rails, and a purpose-built 6MM ARC GFR Stressproof Bolt. The bolt is forged – not machined from bar stock – to optimize the grain structure of the specially developed Carpenter 158+ steel. This is conducive to cleaner material that is also more resistant to fatigue. Each bolt is not only the subject of thorough quality inspection at each stage but is also high-pressure tested (HPT) and magnetic-particle inspected (MPI). These resilient bolts are designed to significantly increase the service life of the 6MM ARC semi-auto platform bolt, allowing it to reach the full potential of the cartridge.

Even the upper receiver itself has been improved upon. The GFR uppers have properly heat-treated steel cam races riveted into place intended to provide steel-on-steel contact with the cam pin while the system is cycling. This prolongs the upper’s lifespan while maintaining tolerances. The forward assist has also been relocated further forward which allows for more working space to operate the charging handle while a magnified optic is installed up top on the 1913 Picatinny rail. Each GFR comes equipped with the ambidextrous Geissele Super Charging Handle to assure the user has proper purchase of the dual-contoured levers when charging the weapon.

The GFR Recce features the addition of a HUXWRX Flash Hider-QD 6MM ARC suppressor-ready muzzle device. The Nanoweapon-coated HUXWRX Flash Hider-QD muzzle device is compatible with the HUXWRX FLOW 6 k suppressor, FLOW 762 Ti suppressor, or Blastphemy blast deflector (available separately).

Geissele's renowned MK16 Super Modular Rail with center alignment tab comes standard on the GFR and mates with a notch in the upper receiver, just the same as the Super Duty lineup. This removes any chance of handguard rotation during use and ensures confidence in anything mounted to the 1913 Picatinny top or the radial M-LOK sections.

Similar to Geissele's Super Duty line, the GFR lower receivers are precision machined from forged 7075-T6 aluminum and use all of the familiar high-quality Geissele lower parts such as the Maritime Bolt Catch, checkered takedown pins, and stainless magazine catch. Every GFR has a non-adjustable spring-loaded tensioning plunger installed to provide a tight fit with the upper receiver, which mitigates wobble when the upper and lower are mated together. The magazine well has also been improved with a more aggressive flare that has been optimized for use with Geissele's dedicated Geissele 6MM ARC magazines. Every GFR also comes with a Super 42 Buffer system installed, which provides silky-smooth shooting right out of the box, and a new reduced-angle Geissele Grip to provide users with a more modern primary point of contact.

The Geissele BF stock features four QD sling swivel sockets. It encompasses a shrouded adjustment trigger preventing any snagging or unintentional repositioning and offers a comfortable cheek weld for optimized eye relief.



Geissele Automatics


6mm ARC


Semi Automatic

Barrel Length






Why Customers Bought This

Questions & Answers

Customer Photos & Videos