The Yankee Hill Machine 6.8mm SPC Lightweight Carbine complete upper has a 16" chome-moly vanadium steel barrel that has been heat treated to RC 25-32 and features custom cut diamond fluting to increase rigidity and aid in cooling. Further enhancing the accuracy of the barrel is the free floating carbine length lightweight quad rail and handguard, which also includes a forearm endcap. Optics are provided for with flip up front and rear iron sights. The forged 7075-T6 aluminum upper receiver comes complete with a mil. spec. bolt carrier assembly with forward assist and a "T" marked rail.

The 6.8mm SPC Lightweight Carbine upper half is fully customized with all Yankee Hill Machine parts and accessories. Total weight: 4.4 lbs.

Features Include:
- Mil-spec forged 7075-T6 aluminum YHM flat top upper receiver (ARR-179)
- "T" Marked upper receiver with forward assist
- Mil-spec bolt carrier assembly
- 16" Chrome-moly vanadium steel barrel, heat treated to RC 25-32
- Chambered in 6.8mm SPC II, chrome-lined with a 1:10" twist
- YHM Diamond fluting Improves rigidity and aids in barrel cooling
- YHM 6.8mm Phantom 5C2 flash hider/compensator
- YHM Carbine length lightweight railed handguard
- YHM Forearm endcap
- YHM Front flip sight tower (ARR-9394)
- YHM Flip rear sight (ARR-9680)


For warranty information, please contact:
Yankee Hill Machine Co, Inc.
20 Ladd Avenue, Suite 1
Florence, MA 01062
1-877-892-6533
service@yhm.net