Gemtech GVAC Upper Receiver Group 5.56 16.1"

Gemtech GVAC Upper Receiver System

The GVAC system represents a significant advancement in suppressed rifle performance. Gemtech's patented design substantially reduces gas blowback, allowing you to shoot suppressed with greater comfort and reliability.

Key Features

Upper Receiver

• Mil-Spec construction with indexing marks and M4 feed ramps
• 7075-T6 aluminum with Type III hard coat anodize for durability

Barrel

• 4150 CMV steel, stress relieved and Armornite treated
• 1:8 twist rate with 5R rifling for accuracy and bullet stability
• GVAC profile optimized for suppressed operation
• Nickel boron coated barrel extension
• 1/2x28 TPI muzzle threads for suppressor mounting

Gas System

• Pinned low-profile GVAC gas block in 4140 CM steel
• Mid-length direct impingement design
• Engineered to minimize felt recoil and muzzle rise

Bolt Carrier Group

• Carpenter 158 steel bolt with enhanced profile
• 8620 steel carrier with mag-phos finish and chrome lining
• Mil-Spec tested and properly staked gas key
• Chrome firing pin for reliability

Handguard

• 15" Midwest Industries Combat M-LOK free-float design
• Seven-sided profile for ergonomic grip
• Continuous MIL-STD 1913 Picatinny top rail
• Integrated QD sling sockets
• 6061-T6 aluminum with Type III hard coat anodize

Muzzle Device

• Gemtech ETM flash hider in 4140 CM steel
• Reduces muzzle signature and flash

Performance

The GVAC system's re-imagined barrel profile and enhanced bolt carrier group work together to maximize performance when shooting suppressed. This upper receiver group arrives complete with bolt carrier group—no charging handle included.

Ideal for shooters who demand precision and reliability in suppressed applications.