Shadow Systems U526 Features The Shadow Systems U526 centers on an intermediate gas system paired with a hybrid profile chrome lined 4150 CMV barrel that together produce a smoother more consistent recoil impulse than many rifles in its class. The 16 inch barrel carries a 1:7 twist rate a spiral fluted profile for reduced weight and improved heat dissipation and a pinned gas block that keeps the gas system aligned under hard use. A two stage duty trigger gives a more predictable cleaner break than a typical single stage mil-spec trigger which matters for shooters who demand accuracy at speed. The Maelstrom flash hider manages muzzle flash while contributing to the rifle s overall balance and controllability during rapid strings of fire. Shadow Systems built the U526 as a complete system rather than an assembly of off the shelf parts and that philosophy carries through the proprietary furniture M-LOK handguard and Picatinny top rail that make up the rifle s upper half. The black polymer stock and grip are matched specifically to this platform for consistent ergonomics and a manual safety selector gives straightforward positive control over the rifle s state. A 60 to 90 degree thumb safety throw adds further confidence during transitions between positions. This California compliant configuration ships with a single 10 round CompMag magazine making the U526 a dependable choice for California shooters who still want a true duty grade rifle for sale at GrabAGun. Shadow Systems U526 Specifications Manufacturer: Shadow Systems Model: U526 Type: Semi Auto Rifle Caliber: 5.56 NATO Capacity: 10+1 Barrel Length: 16 Barrel Material: Chrome Lined Steel Barrel Description: Spiral Twist Rate: 1:7 Gun Platform: AR Style Receiver Description: Picatinny Rail Handguard: M-LOK Stock Material: Polymer Grips: Polymer Color: Black Trigger: Two Stage Safety: Manual Selector Muzzle Device: Maelstrom Flash Hider Magazines Included: 1 Sights: None Thread Pattern: 1/2x28 Weight: 6.45 lbs State Compliance: CA Available At: GrabAGun