LE-EURG™ Upper Receiver Group

SDS Law Enforcement-Enhanced Upper Receiver Group (LE-EURG™) 11.5" Short-Stroke Piston Upper Receiver Assembly

Engineered for superior reliability, duty-use, and modularity, our 11.5" LE-EURG™ Short-Stroke Piston Upper Receiver Group represents a true workhorse. Designed for discerning operators who demand enhanced performance in high-stress environments, this assembly integrates premium components alongside decades of AR-15 experience to deliver reduced maintenance, improved suppressor compatibility, and minimized gas blowback to the user. Ideal for close-quarters applications, it combines a robust short-stroke gas piston system with mil-spec foundations, ensuring consistent & effective operation even in the most adverse conditions. 

Key Features

• Short-Stroke Gas Piston System: Superlative patented Short-Stroke piston system provides enhanced reliability over traditional direct impingement (DI) designs by reducing carbon fouling and heat transfer to the bolt carrier group, resulting in smoother cycling and extended service life.
• Adjustable Piston System: Suppressed & unsuppressed modes available with the simple turn of the key located on the gas block. 
• Barrel: Precision-machined Centurion HPT/CL 11.5" FBI profile barrel, featuring exceptional corrosion resistance, improved longevity, and consistent accuracy across high round counts. (Mos-Tek & Criterion options available) 
• BCG: Proprietary Superlative DLC Piston BCG (LMT BCG option available) 
• Rearden Muzzle Device: Threaded for seamless suppressor compatibility, offering reduced flash and recoil while maintaining a compact profile for maneuverability.
• Geissele Airborne Charging Handle: Ambidextrous design and mitigates gas blowback to the shooter's face, enhancing comfort and safety during suppressed or high-volume fire.
• Geissele MK4 Federal Rail: Lightweight, free-floating M-LOK rail system for optimal accessory mounting, providing a rigid platform for lights, lasers, and foregrips without compromising barrel harmonics. Designed for & used by the FBI HRT teams. 
  
• Mil-Spec Upper Receiver: Forged from high-strength 7075-T6 aluminum with Type III hardcoat anodizing for maximum durability and compatibility with all standard mil-spec AR-15 lowers.

Default assembly ships without an optic or accessories for maximum customization. SUPPRESSOR NOT INCLUDED. SUPPRESSOR IN PHOTOS IS FOR REPRESENTATION PURPOSES ONLY. 

Specifications

• Caliber: 5.56 NATO / .223 Remington
• Barrel Length: 11.5"
• Gas System: Short-Stroke Piston
• Twist Rate: 1:7"
• Muzzle Thread: 1/2x28
• Weight: 3lb 6 oz (base configuration, without optic)
• Finish: Black Hardcoat Anodized
• Compatibility: Fits any/all MIL-SPEC AR-15, M4 or M16 lower receivers

 

OPTIONAL ADDITIONAL ACCESSORIES

(Not included in base price. Pricing presented upon quote after client submits a LOI/PO)
 

Optional Accessories:

• Surefire M640T Turbo Light: High-output, weapon-mounted illuminator with turbo mode for extended reach and candela, ensuring superior target identification in low-light scenarios. Features a durable aluminum body and integrated Picatinny mount. Will include tape switch/pressure pad. (Pricing upon inquiry)
  
• Foregrip/Handstop: Magpul, BCM & True North Concepts offerings available. 

Optional Optics:

• Aimpoint T1 Micro Red Dot Sight
• Aimpoint T2 Micro Red Dot Sight
• EOTech EXPS3 HWS
  
  Aimpoints will include 39mm B&T riser or Spuhr HRT low-profile riser. Per clients choice upon time of order. Other options available upon special request. Pricing will reflect the selected options. 
  

Warranty and Compliance:
Backed by a limited lifetime warranty against manufacturing defects. 

Pricing- Base Configuration: $1,299.99 

NOTICE

The SDS LE-EURG™ Short-Stroke Piston Upper Receiver Assembly is restricted to law enforcement agencies, licensed & verified private defense contractors, and direct military procurement under official contract only. This product is currently not available for civilian sale.

All orders require submission of appropriate credentials, agency/contract documentation, and verification. We strictly comply with all federal, state, and local regulations.

For procurement inquiries, please contact our professional sales team to arrange a PO/LOI.