VKTR Industries VK Combat Match Bolt 556 NATO 223 Rem 9310 Steel V 2006 0701 001 RP UPC 810155160043
Product Description
The VKTR Industries® VK Combat Match Bolt (SKU: V-2006-0701-001-RP / UPC: 810155160043) delivers match-grade precision accuracy alongside uncompromising combat reliability for hard-use AR-15 and M4 weapon systems. Designed from the ground up to eradicate the structural failure points inherent to traditional direct-impingement bolts, this component provides extreme longevity, tighter gas sealing, and true concentric alignment for duty, tactical, and precision competition builds chambered in 5.56x45mm NATO, .223 Remington, and .300 AAC Blackout.
Precision CNC-machined from premium vacuum-melt 9310 alloy steel and heat-treated to an optimal core-to-case hardness profile, the VK Combat Match Bolt exhibits dramatically higher yield and tensile strength than conventional Carpenter 158 mil-spec bolts. To prevent stress risers, the bolt is turned and ground between precision centers for absolute concentricity, followed by two separate rounds of high-intensity shot peening. The bolt face is fully supported, and the locking lugs feature increased shear surface area with eliminated undercuts at the critical roots adjacent to the extractor pocket.
Engineered for maximum extraction reliability during sustained strings of rapid or suppressed fire, the assembly incorporates an upgraded high-grade silicon extractor spring, mil-spec black reinforcement buffer insert, and a heavy-duty Viton Crane O-ring. Three precision-machined, staggered gas rings maintain balanced pneumatic sealing against the carrier bore, reducing velocity standard deviation and mitigating cyclic bolt bounce in both semi-automatic and select-fire host weapons.
*Armorer Bench Notes & Real-World Staging Guidance:*
Fitment Matrix: Direct drop-in for standard AR-15 / M16 direct-impingement bolt carriers chambered in 5.56x45mm NATO, .223 Remington, and .300 AAC Blackout. CRITICAL: Incompatible with 6.5 Grendel, 6.8 SPC, 7.62x39mm, .450 Bushmaster, .458 SOCOM, or large-frame AR-10 / LR-308 platforms. When installing into an existing high-round-count barrel extension, always verify headspace using Clymer or Forster 5.56/.223 GO (1.4636") and NO-GO (1.4646") gauges before operational deployment.
- Ensure the host firearm is completely clear, magazine removed, and the chamber visually and physically verified empty.
- Separate the upper and lower receivers, withdraw the bolt carrier group (BCG) and charging handle, and remove the firing pin retaining pin, firing pin, cam pin, and existing bolt assembly from the carrier.
- Lubricate the tail, gas ring channels, and bolt body of the new VKTR Combat Match Bolt with high-viscosity synthetic weapons oil or grease, and stagger the three gas ring gaps 120 degrees apart.
- Insert the VK Combat Match Bolt into the carrier bore with the extractor positioned at the 10 o'clock position (ejection port side), install the cam pin, verify proper rotation orientation, insert the firing pin, and secure with the firing pin retaining pin.
- Perform a bench function test: extend the bolt forward, confirm the assembly stands unsupported on its bolt face without collapsing under its own weight, reassemble into the receiver, and verify smooth lockup, primary extraction, and dry-fire cycling.
Key Features
- Heat-Treated 9310 Alloy Steel: Offers superior fatigue life, elastic memory, and higher impact resistance compared to standard military-issue Carpenter 158 steel.
- Ground Between Centers Concentricity: Eliminates radial runout to ensure uniform lug engagement against the barrel extension, maximizing mechanical accuracy potential.
- Dual-Stage Shot Peened Surface: Undergoes two separate shot-peening treatments to introduce compressive surface stress and close micro-fissures for maximum structural life.
- Strengthened Lug Design & Supported Face: Engineered with widened lug roots and zero undercuts around the extractor pocket to eliminate the leading cause of AR-15 bolt shearing.
- Extreme-Duty Extractor Sub-Assembly: Fitted with an upgraded silicon alloy spring, black reinforcement insert, and Crane Viton O-ring to prevent high-pressure case slippage.
- Drop-In Direct Impingement Integration: Matches standard AR-15 / M4 direct-impingement carrier geometry for seamless upgrades across duty and precision rifles.
Product Specifications
- Brand: VKTR Industries®
- Model/Series: VK Combat Match Bolt
- MPN / SKU: V-2006-0701-001-RP / V20060701001RP
- UPC: 810155160043
- Caliber / Cartridge Compatibility: 5.56x45mm NATO, .223 Remington, .300 AAC Blackout
- Material: Heat-Treated 9310 VAR Alloy Steel
- Surface Finish: Dual-Pass Shot Peened / Natural Matte Silver
- Platform Compatibility: AR-15 / M4 / M16 Direct-Impingement Carrier Assemblies
- Country of Origin: United States
