Home / Products / VKTR Industries / PD TRADE-IN - VKTR VK-1 Complete Piston Upper Receiver 10.5 5.56 NATO Cold Hammer Forged Barrel, Self Regulating Gas, MLOK, w/ Flow 556K Suppressor & Vortex Red Dot
PD TRADE-IN - VKTR VK-1 Complete Piston Upper Receiver 10.5 5.56 NATO Cold Hammer Forged Barrel, Self Regulating Gas, MLOK, w/ Flow 556K Suppressor & Vortex Red Dot

PD TRADE-IN - VKTR VK-1 Complete Piston Upper Receiver 10.5 5.56 NATO Cold Hammer Forged Barrel, Self Regulating Gas, MLOK, w/ Flow 556K Suppressor & Vortex Red Dot

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$1,999
MSRP
$1,999
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Updated
Mar 19, 2026
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Specifications

MPN
V-4027-3410-007-RP-PD

Description

PD TRADE-IN - VKTR VK-1 Complete Piston Upper Bundle 10.5" 5.56 NATO w/ HUXWRX FLOW 556K Suppressor & Vortex Triumph 2 MOA Red DotThis law enforcement police trade-in bundle combines a premium piston-driven upper receiver with a modern suppressor and red dot optic-creating a turnkey suppressed AR platform ready for duty, defense, or range performance. These uppers were sourced directly from a department upgrade program and saw less than 1,000 rounds of use before the agency transitioned to a different barrel length to meet updated contract requirements.At the core of this bundle is the VKTR VK-1 Complete Forged Piston Upper, built around VKTR's advanced self-regulating piston system designed to run cleaner, cooler, and more reliably than traditional direct-impingement platforms. The 10.5-inch cold hammer forged heavy profile barrel with a 1:7 twist delivers excellent durability and consistent accuracy, while cooling flutes and a nitride finish improve heat management during sustained fire.The forged upper receiver uses a thermal-fit barrel interface that enhances lockup and helps minimize potential point-of-impact shift. Internally, the system runs VKTR's precision-machined one-piece bolt carrier group with a dense chrome finish and patented enhanced cam path engineered for proper timing and consistent lockup shot after shot.This bundle includes the HUXWRX FLOW 556K suppressor, a cutting-edge flow-through suppressor engineered to reduce back pressure and toxic gas exposure while maintaining reliability and weapon longevity. Using patented Flow-ThroughA(R) and Torque LockA(R) technology, the suppressor redirects expanding gases forward through a helical coil and core deflector system, dramatically reducing blowback while maintaining repeatable accuracy and minimal point-of-impact shift. Built using DMLS printed 17-4 stainless steel, the FLOW 556K is full-auto rated and designed to withstand demanding operational environments.To complete the package, the bundle includes the Vortex Optics Triumph 2 MOA Red Dot Sight, providing a fast and durable aiming solution. The crisp 2 MOA dot allows rapid target acquisition while maintaining precision at distance. With 50,000 hours of battery life, waterproof and fogproof construction, and multiple brightness settings including night-vision compatibility, the Triumph offers dependable performance in any conditions. The included multi-height mount supports lower 1/3 co-witness on AR platforms or a low-profile mount for other firearms.Combined with a Radian Weapons Raptor(TM) charging handle, M-LOK handguard, and continuous Picatinny rail, this police trade-in configuration delivers a complete suppressed upper package with optic, providing serious capability at a substantial savings compared to buying each component separately.Now available at ARMSAGORA's retailers.PD Trade-In Conditiona Law Enforcement Trade-Ina Less than 1,000 rounds fireda Department replaced uppers due to contract-required barrel length changea Mechanically excellent with light cosmetic handling marks possibleBundle Includes1A- VKTR VK-1 Complete Piston Upper Receiver1A- HUXWRX FLOW 556K 5.56 Suppressor (Black)1A- Vortex Optics Triumph 2 MOA Red Dot (UPC: 843829148986)Key FeaturesVKTR VK-1 Self-Regulating Piston SystemEngineered for reliability and reduced fouling with a compact piston footprint.Cold Hammer Forged 10.5" BarrelHeavy profile barrel with cooling flutes for durability and heat management.Thermal Fit Upper ReceiverPrecision interface improves barrel lockup and helps reduce POI shift.Enhanced One-Piece Bolt CarrierPatented carrier with revised cam path and dense chrome finish for durability and timing consistency.Continuous Picatinny Rail15-slot uninterrupted rail for optics, lasers, and accessories.Low Profile M-LOK HandguardLightweight modular rail system for modern accessory mounting.HUXWRX FLOW 556K SuppressorFlow-ThroughA(R) technology dramatically reduces back pressure and gas blowback while maintaining reliability.Torque LockA(R) Mounting SystemTool-less locking interface ensures secure suppressor mounting and repeatable alignment.Vortex Triumph 2 MOA Red DotFast target acquisition with long battery life and rugged waterproof construction.Radian Weapons Raptor(TM) Charging HandleAmbidextrous charging handle for smooth manipulation under stress.VKTR Upper SpecificationsManufacturer: VKTR IndustriesModel: VK-1 Complete Piston UpperCaliber: 5.56 NATOBarrel Length: 10.5"Barrel Type: Cold Hammer Forged Heavy ProfileTwist Rate: 1:7Barrel Finish: NitrideThread Pitch: 1/2A-28Operating System: VK-1 Patented Self-Regulating PistonHandguard: 9.85" M-LOK RailReceiver: Forged Upper with Thermal Fit InterfaceRail: Continuous 12 o'clock PicatinnyBolt Carrier Group:a One-piece precision machined carriera Dense chrome finisha Patented enhanced cam pathCharging Handle: Radian Weapons RaptorColor: Black CerakoteAdditional Components:a Includes required carbine buffer and springVortex Triumph Red Dot SpecificationsManufacturer: Vortex OpticsModel: Triumph Red DotUPC: 843829148986Magnification: 1A-Reticle: 2 MOA DotDot Color: Bright RedBattery Type: CR2032Battery Life: Up to 50,000 hoursAdjustment Graduation: 1/2 MOAMax Elevation Adjustment: 100 MOAMax Windage Adjustment: 100 MOALength: 2.52"Weight: 4.38 ozMounting: Multi-height mount system (low or lower 1/3 co-witness)HUXWRX FLOW 556K Suppressor SpecificationsManufacturer: HUXWRXModel: FLOW 556KUPC: 706433763559Caliber: 5.56 NATO (multi-caliber compatible)Length: 5.5"Diameter: 1.6"Weight: 11.9 - 12.9 ozMaterials:a 17-4 Stainless Steel outer bodya Grade 5 Titanium internal coilsTechnology:a Flow-ThroughA(R) Helical Coil Systema Torque LockA(R) Tool-less MountingSound Levels (Shooter's Ear):a 136-140 dB on 20" AR-15a 138-142 dB on 16" AR-15a 142-146 dB on 10.5" AR-15Full-Auto RatedCompatible Platforms:a 5.56 NATOa 5.7A-28a .17 HMRPolice trade-in packages with premium piston uppers, suppressors, and optics rarely hit the market.Take advantage of this complete suppressed upper bundle at a major savings while inventory lasts at ARMSAGORA's retailers.
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