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Buy GEISSELE AUTOMATICS LLC – SUPER DUTY RIFLE 14.5 5.56MM online. The Super Duty Rifle offers the latest in firearm technology offered only from Geissele Automatics. This 14.5” rifle chambered in 5.56mm boasts a Nanoweapon coated Surefire Closed-Tine Warcomp Pinned and Welded to an in-house 14.5” Black Oxide Cold Hammer Forge, Chrome Lined, 1-7 twist Geissele barrel. Our barrels are carefully machined and cold hammer forged with the best quality materials at our state of the art facility in North Wales, PA. The Super Mid-length gas system with Geissele Super Compact Gas Block (with bomb-proof installation) provides dependability and excellent performance in difficult situations and intensive usage.

Exclusive to the Super Duty 14.5” Rifle is the all new SSA-E X with Lighting Bow trigger. This nanocoated, two-stage trigger boasts a broad body and bow form that strikes the right balance between a conventional M4 trigger and a flat body trigger. At the core of this weapon is the Geissele REBCG (Reliability Enhanced Bolt Carrier Group) (Reliability Enhanced Bolt Carrier Group).

This Nanoweapon coated BCG is machined from mil-spec 8620 steel, with a fully torqued and staked, chrome lined gas key. The Cam Pin is machined from sophisticated, medical steel known as H13 which is additionally coated with Nanoweapon for optimal corrosion and wear resistance. The REBCG also incorporates longer top rails, giving increased stability and considerably enhancing feeding dependability.

The REBCG comes with the Geissele Stressproof Bolt. Made from Carpenter 158+, directly created with Carpenter Steel metallurgists to produce a material that is cleaner and has fewer impurities. This makes our Stressproof bolt stronger and more fatigue resistant. The Geissele Stressproof bolt is likewise forged, not machined from barstock. This enables us to tune the grain structure of the steel to create a bolt capable of 5 times the life of a mil-spec bolt. Each bolt is extensively examined, high pressure tested, mag particle inspected and Nanoweapon coated.

The Super Duty lower is finely machined from 7075-T6 aluminum and contains Geissele’s Ultra Duty Lower Parts Kit incorporating our Ambidextrous Super Configurable safety and Ultra Precision trigger guard. A high grade mil-spec Geissele Buffer Tube with a Super-42 in H2 buffer guarantees this weapon is perfectly tuned out of the box.

Rounding up the package is a 13.5” MK16 Super Modular Rail, that mates to the Super Duty Upper Receiver through a center aligning tab that prevents any danger of rail rotation. The MK16 line of rails are deployed by USASOC and regarded by operators for their performance and comfort. An Airborne Charging Handle, ensuring smooth and dependable functioning.

A Geissele Rifle Grip and a B5 Systems Enhanced Sopmod Stock finalizes this high-end rifle that provides the operator unequaled accuracy and performance. What is Geissele Nanoweapon?

Geissele Nanoweapon (also known as Picatinny DSL) is a series of Durable Solid Lubricant coatings which was created by ARDEC. It is offered solely from Geissele Automatics. We maintained the development of Picatinny DSL such that its degree of corrosion, wear and abrasion resistance is today unparalleled among handgun coatings.

Nanoweapon is applied at low temperatures such that the underlying metallurgy of the component is not impacted by the application procedure. Our coating also has a surface hardness about similar to synthetic diamond. This makes Geissele Nanoweapon tougher than sand, readily rejecting carbon and making cleaning a pleasure, on top of enabling the firearm to perform properly with minimal lubrication.

What is Luna Black?

Luna Black is a glossy, deep black color that is offered as an option for Super Duty Rifles and Super Duty Uppers. Being Type 3 Hardcoat Anodize Luna Black is sturdy and long lasting. This premium finish guarantees your high-end construction standout above others.


  • LENGTH:  14.5″”
  • CALIBER:  5.56MM
  • LOWER RECEIVER:  Super Duty Lower Mil-Spec
  • UPPER RECEIVER:  Super Duty M4 Upper
  • BCG:  REBCG (Reliability Enhanced Bolt Carrier Group)
  • BOLT:  Geissele Stressproof Bolt
  • RAIL  13.5″” SMR MK16 w/ Geissele Center Tab
  • TRIGGER:  SSA-E X w/ Lighting Bow
  • BARREL:  14.5″” Barrel, CHF, Chrome Lined, 1-7 Twist (Pin & Weld)
  • GAS SYSTEM:  Mid-Length
  • GAS BLOCK:  Super Compact Gas Block
  • CHARGING HANDLE:  Airborne Charging Handle
  • MUZZLE:  Nanocoated Surefire Closed-Tine Warcomp
  • BUFFER:  Mil-Spec 6 Position, 7075-T6
  • BUFFER ASSEMBLY:  Super-42 w/ H2 Buffer
  • STOCK:  B5 Systems Enhanced Sopmod Stock
  • GRIP:  Geissele Rifle Grip
  • LOWER PARTS KIT:  Ultra Duty Lower Parts Kit


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