Yankee Hill Machine parts and accessories are the perfect compliment to the high quality modern sporting rifle builds of today. These purpose driven parts and accessories are developed and designed with an emphasis on quality. Yankee Hill is know for it's high quality construction and rigorous quality control standards to ensure they provide you with the best possible finished product. Yankee Hill has earned its reputation in the industry be meeting and exceeding the standard they have set forth and with quality customer service they really are second to none.

Specifications and Features:
Yankee Hill Machine AR-15 CMMG Enhanced Complete Bolt Carrier Group YHM-921-BA
9mm Luger Compatible
Ready to Drop into 9mm upper
Unit is Ramped for use with Standard AR or M16 Hammer
Matte Black
Note: Will not function with dedicated 9mm Hammer, use standard hammer