Shipping costs are based on an estimate of UPS ground or equivalent carrier within the contiguous US, excluding Alaska and Hawaii. Please see Seller's website for actual shipping costs.
Details of Blackout Defense Quantum Mark 2 13.9in Mid Complete Upper Black Anodize No Muzzle Device
Blackout Defense Quantum Mark 2 13.9in Mid Complete Upper Black Anodize No Muzzle Device. The upper receiver and handguard are precision machined to achieve perfect alignment giving a monolithic-like appearance. And with the alignment pins you get a boost of structural integrity as well. Upper Receiver. The upper receiver is machined from Aerospace Grade Aluminum with enhanced walls for greater rigidity and structural integrity all while keeping a low profile. It features two anti-rotation holes that align precisely with our handguard. What youre left with is a monolithic-like style and design with an extremely robust upper/handguard combination. The dust cover often goes unnoticed in an AR-15. Not to us. The dust cover is fully contained within the upper receiver. We dont rely on a C-clip to keep everything in place. Instead the dust cover hinge pin is held in place by the barrel nut ensuring nothing comes loose during operation. Due to the variation of dust cover manufacturers and their loose tolerances weve machined a very thin locking groove in the upper receiver. This allows the ball detent of the dust cover to cut its own channel in the upper receiver ensuring a positive audible lock up and exact alignment. Handguard. Their handguard brings the full package together with its monolithic-like style when paired with their upper. Like to accessorize? Handguard gives you five sides of M-LOK compatible mounting slots with a full-length Picatinny top rail. The hand deburring process they put their products through ensures a smooth finish throughout. And for style-conscious people their barrel nut is hidden to provide an even cleaner look. Barrel. The Performance Series barrels start with premium 416-R stainless steel bars that are gun-drilled and reamed at standard production speeds in 5R rifling and 1:8 twist. The blanks are then fully stress-relieved and precision air gauged before profiling threading and chambering begin. Their barrel profile features strategically placed linear expansion rings that control the heat growth of the barrel during heavy use. These unique design features coupled with their adherence to improved machining tolerance standards result in straighter bores a superior finish and improved accuracy. Bolt Carrier Group. The Blackout Defense bolt carrier is manufactured from 8620 steel while their shot-peened bolt is made from either 9310 or carpenter 158. The bolts are batch high pressure tested and individually magnetic particle inspected after heat-treat to ensure no microcracks. Charging Handle. The ambidextrous design of the Stryker charging handle allows for multiple ways of use no matter your shooting side or position. Specifications for Blackout Defense Quantum Mark 2 Mid Complete Upper: Manufacturer: Blackout Defense Cartridge: .223 Wylde Barrel Profile: Standard Gas System Length: Mid Length Barrel Twist Rate: 1-8 Threads per Inch: 1/2x28 Handguard Type: Free-Float Muzzle Device: None Finish: Anodized Color: Black Fabric/Material: Aerospace Grade Aluminum Gas Block Journal Size-Diameter: .750 in Attachment/Mount Type: M-LOK Gun Rail: Picatinny M-LOK Gun Type: Rifle Gun Make: AR Platform Gun Model: AR-15 Barrel Material: 416R Stainless Steel Bolt Carrier Group Included: MIL-SPEC Charging Handle Included: MIL-SPEC Features of Blackout Defense Quantum Mark 2 Mid Complete Upper Reinforced in critical areas Monolithic-like appearance between upper and handguard Alignment pins between upper and handguard Package Contents: Blackout Defense Quantum Mark 2 Mid Complete Upper Blackout Defense 92268: Quantum Mark 2 13.9in Mid Complete Upper Black Anodize No Muzzle Device Blackout Defense 92271: Quantum Mark 2 16.0in Mid Complete Upper Black Anodize No Muzzle Device Blackout Defense 92268: Quantum Mark 2 13.9in Mid Complete Upper Black Anodize No Muzzle Device