LWRC SIX8-SPR Semi-Automatic Centerfire Rifle 6.8mm Remington SPC 16″ Barrel Black and Black Collapsible

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LWRC SIX8-SPR Semi-Automatic Centerfire Rifle 6.8mm Remington SPC 16″ Barrel Black and Black Collapsible for sale

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, LWRC designed the Six8 family of weapons around the magazine. Through a partnership with Magpul, the leader in polymer magazine engineering, the first polymer 6.8 magazine was born. 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. The 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.  The LWRC Mark II Advanced Combat Bolt features a fully-supported bolt face for increased strength and case head support. The bolt face also features an outer groove to collect dirt and brass shavings. Dual extractor springs and a claw-shaped extractor work together to ensure consistent, strong ejection in all conditions. The nickel-boron coating completes the package, making the ACB a true step up in 6.8 design. As with the IC family, the weapons in the Six8 family are fully ambidextrous. LWRC Six8 rifles are, put simply, the familiar Stoner M4/AR-15/M16 architecture fully optimized for the 6.8 cartridge.


  • Proprietary Lower Receiver optimized for the 6.8 SPC II Cartridge
  • Full Ambidextrous Lower Receiver: bolt catch and release; magazine release and fire control
  • Patented Short Stroke Gas Piston System
  • Advanced Combat Bolt 6.8. Nickel-Boron coated bolt carrier


Product Information

Cartridge 6.8mm Remington SPC
Capacity 30+1 Round
Weight 6.95 Pound
Overall Length 35.5 Inches
Barrel Length 16 Inches
Twist 1:10
Threads 5/8″-24
Hand Right
Youth No
Barrel Contour Heavy
Action Type Semi-Automatic
Stock Type Collapsible
Stock Material Synthetic
Stock Color Black
Safety Ambidextrous Thumb
Threaded Muzzle Yes
Barrel Finish Black
Front Sight Flip Up
Rear Sight Flip Up
Frame Material Aluminum
Muzzle Device A2 Flash Hider
Scope Included No
Frame Finish Black
Magazine Style Detachable
Fluting No
Country of Origin United States of America
Included Mounts Yes

Delivery Information

Must Ship to FFL Dealer Yes
Shipping Weight 9.860 Pounds


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