This full build kit provides all components needed to complete a 6.5 Grendel AR-15 build except the lower receiver. It includes a 10.5 inch HBAR barrel with pistol gas system, M-Lok freefloat handguard, complete bolt carrier group with QPQ nitride finish, charging handle, buffer system, lower parts kit, and Gauntlet Arms stabilizing brace. The upper receiver is forged 7075-T6 aluminum with anodized finish and M4 feed ramps. The barrel is 4150 CrMoV steel with phosphate finish and 1 in 8 twist rate.
This kit includes the upper assembly, bolt carrier group, charging handle, buffer tube assembly with pistol buffer and spring, lower parts kit, and stabilizing brace. All components required to complete an AR-15 pistol build are provided except the lower receiver.
The Gauntlet Arms polymer stabilizing brace is constructed from nylon reinforced polymer for structural integrity. The brace is paired with a complete buffer system including pistol buffer tube, buffer, recoil spring, and necessary hardware.
The 10.5 inch HBAR profile barrel is chambered in 6.5 Grendel with a 1 in 8 twist rate for projectile stabilization. The phosphate finish offers corrosion resistance and surface hardness. The pistol gas system is matched to the barrel length. The micro low profile gas block sits under the handguard for a clean profile.
The complete bolt carrier group features QPQ nitride finish for enhanced corrosion resistance and reduced friction. The upper receiver features M4 feed ramps for reliable feeding. The M-Lok freefloat handguard provides attachment slots for modular accessory placement without adding unnecessary weight.
Lower receiver not included. Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.
Caliber: 6.5 Grendel
Barrel Length: 10.5-inch
Barrel Material: 4150 CrMoV Steel
Barrel Thread Pitch: 5/8x24
Barrel Finish: Phosphate
Barrel Profile: HBAR
Barrel Twist Rate: 1:8
Barrel Gas System Length: Pistol
Handguard Material: 6061-T6 Aluminum
Handguard Color: Black
Handguard Style: M-Lok
Upper Receiver Material: 7075-T6 Aluminum
Upper Receiver Finish: Anodized
Upper Receiver: AR-15 Upper Receiver, M4 Feed ramps, 7075 T6 Aluminum, Anodized
Gas Block Size: 0.750
Gas Block: Micro Low-Profile Gas Block, .750 O.D Barrel Steel
Muzzle Device: AR-15/AR-10 .308 5/8x24 TPI GI Birdcage Flash Hider
Muzzle Device Thread Pitch: 5/8x24
Charging Handle: AR-15 M4 Charging Handle Mil-Spec Quality
Bolt Carrier Material: 9310 Alloy Steel (Bolt Head), 8620 Alloy Steel (Body)
Bolt Carrier Finish: Nitride
Bolt Carrier: AR-15 6.5 Grendel II QPQ Nitride Complete Bolt Carrier Group
Pistol Brace: Polymer Stabilizing Brace - Black
Pistol Brace Style: Pistol Brace
Pistol Brace Color: Black
Pistol Brace Material: Nylon Reinforced Polymer
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