SIX8-UCIW
Ultra-Compact Individual Weapon
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SIX8-UCIW
Ultra-Compact Individual Weapon

The 6.8X43MM SPC II cartridge was developed as a part of the Enhanced Rifle Cartridge Program to address the deficiencies in terminal performance seen with 5.56x45mm NATO cartridge while allowing the soldier to carry the same number of rounds with a minimal weight penalty. By using a heavier projectile, the 6.8 round offers more impact energy than the 5.56 NATO round across all effective ranges, effectively bridging the gap in lethality between 5.56 NATO and 7.62 NATO.

A major drawback of using the 6.8 Cartridge in an M4 style weapon has been the lack of reliable magazines. To solve this issue, we designed our Six8 family of weapons around the magazine. Through a partnership with Magpul, the leader in polymer magazine engineering, we designed the first polymer 6.8 magazine. The Six8 PMAG features many of the same design characteristics of the standard PMAG, including the curved shape and familiar texture. The body is slightly wider, and the walls were strengthened in critical areas. Our red follower makes the Six8 magazine easy to pick out of a pile.

The upper and lower receivers are designed to accommodate the slightly larger polymer magazine and to perfect the feed geometry for the 6.8 cartridge. As with the IC family, the weapons in the Six8 family are fully ambidextrous. Our Six8 rifles are, put simply, the familiar Stoner M4/AR-15/M16 architecture fully optimized for the 6.8 cartridge.

Features

  • LWRCI™ PROPRIETARY UPPER AND LOWER RECEIVERS OPTIMIZED FOR THE 6.8 SPC II CARTRIDGE
  • LWRCI™ 8.5" COLD HAMMER FORGED NICORR TREATED HEAVY BARREL
  • LWRCI™ HIGH EFFICIENCY FLASH HIDER
  • LWRCI™ SKIRMISH BACK UP IRON SIGHTS
  • LWRCI™ ENHANCED FIRE CONTROL GROUP
  • LWRCI™ AMBIDEXTROUS SLING MOUNT
  • LWRCI™ 7" ARM-R QUAD RAIL SYSTEM
  • LWRCI™ AMBIDEXTROUS CHARGING HANDLE
  • FULLY AMBIDEXTROUS LOWER RECEIVER
  • LWRCI™ ADJUSTABLE ULTRA COMPACT STOCK
  • MAGPUL MOE + ® GRIP
  • LWRCI™ RAILSKIN RAIL SECTIONS
  • LWRCI™ VERTICAL FOLDING GRIP
  • Caliber: 6.8 SPC II
  • Barrel Length: 8.5” (21.6cm)
  • Weight: 6.25 lbs (2.83kg)
  • O/A Length: 24-27.25”
  • Muzzle Threads: 5/8 X 24 TPI
  • Rifling: 1/10”RH
  • Advanced Combat Bolt in 6.8. The ACB features a fully supported bolt face, dual extractor springs, the ‘Claw’ extractor that provides 20% mode purchase on the case rim for positive extraction every time, a bolt face groove to collect dirt and brass shaving, and a Nickel Boron coating for wear resistance and permanent lubricity
  • Nickel-boron coated bolt carrier for unparalleled wear resistance, corrosion resistance, and permanent lubricity
  • NiCorr treated LWRCI™ Barrel is precisely torqued in our factory to a consistent torque setting. Cold hammer forged 1:10 twist stabilizes a wide range of bullet types
  • Coined forgings are struck—heat treated— and struck again for precise dimensional accuracy and superior surface finish
  • LWRCI™ applies its own Cerakote: ceramic-based thermoset epoxy finish in 3 color selections

    Patriot Brown
    OD Green
    Flat Dark Earth
    Black Anodized

Available Models

SIX8RB8.0UCIWSIX8- UCIW 8" BLACK
SIX8RCK8.0UCIWSIX8- UCIW 8" FDE
SIX8RODG8.0UCIWSIX8- UCIW 8" OD GREEN
SIX8RPBC8.0UCIWSIX8- UCIW 8" PATRIOT BWN
  • LWRCI™ 7” ARM R Quad Rail System
  • Proprietary LWRCI™ Lower Receiver optimized for the 6.8 SPC II Cartridge
  • LWRCI™ Nicorr Treated Cold-Hammer Forged Standard Heavy Barrel
  • Full Ambidextrous Lower Receiver: bolt catch and release; magazine release and fire control
  • LWRCI™ Enhanced Fire Control Group
  • Patented LWRCI™ Short Stroke Gas Piston System
  • LWRCI™ Advanced Folding Fore Grip LWRCI RailSkin™ Rail Covers
  • LWRCI™ Skirmish BUIS | Back Up Iron Sights
  • LWRCI™ Compact Stock with integrated sling attachment point.
  • Advanced Combat Bolt 6.8. Nickel-Boron coated bolt carrier.
SHORT BARRELED RIFLE NOTICE: LWRCI Complete Rifles with a barrel shorter than 16" may be subject to all NFA/ATF restrictions.

WARNING: Observe safe firearm handling practices at all times. Failure to do so may result in serious bodily injury or death. LWRC International shall not be responsible for injury, death, or property damage resulting from faulty installation, misues, illegal use, or modification of this product.

EXPORT NOTICE: This product and/or its components is subject to the International Traffic in Arms Regulations(ITAR, 22 CFR Parts 120-130) and export is strictly prohibited without authorization or a license issued by the U.S. Department of State's Directorate of Defense Trade Controls. Additionally, any documents or engineering drawings, prints, etc. that can be viewed, downloaded, or printed from our Web site may contain technical data which may not be exported outside of the United States, or released or disclosed to non-US persons (i.e. persons who are not US Citizens or lawful permanent residents) inside of the United States, without prior written authorization by the relevant US Government agency. Violations of these export laws are subject to severe penalties.