Description
The Shadow Systems U526 556 16 Black is a semi-auto rifle from Shadow Systems chambered in 5.56 NATO with a 16 inch barrel and a black finish. It holds 10+1 rounds. This listing is UPC 810120317496, Shadow Systems part number SS-6040-CA.

Shadow Systems U526 556 16 Black Overview
The U526 is a Shadow Systems semi-auto rifle that fires one round per trigger press and cycles itself for fast follow up shots.
Action and Controls
The U526 is a semi-auto rifle. It holds 10+1 rounds. The trigger is Two Stage. The safety is safety selector.
Barrel
The 16 inch barrel is chrome lined steel with a spiral profile and a 1:7″ twist.
Stock and Fit
The stock is polymer with a black finish. Check the length of pull against your own fit, especially if you shoot in heavy clothing. Metal surfaces wear Black.
Size and Handling
A steady rest, a good sling and practice from field positions will help you shoot it well.
Ammo and Practice
Try a few brands and bullet weights to see what groups best in this rifle, then buy enough of that load to practice and hunt with the same ammo.
The 5.56 NATO
The 5.56 NATO chamber also fires 223 Remington, so you can shoot inexpensive practice ammo and premium hunting or defensive loads.
Target Shooting and More
This rifle is a good fit for target shooting, training and, where legal, home defense or hunting. Add a quality optic or red dot and a sling, and confirm your zero.
Optics and Accessories
Plan on quality scope rings or mounts, a sling, a hard or soft case and a cleaning kit. A bipod or shooting sticks help a lot for steady shots in the field or at the bench.
Buying Tips
Budget for quality optics or sights, a sling and ammo, and confirm your zero at the distances you expect to shoot.
Care and Value
Clean the bore and action after each range trip or hunt, keep moving parts lightly oiled and wipe the finish after handling. A well kept Shadow Systems holds its value.
State Laws
Some states limit semi-auto features, magazine capacity and hunting calibers. Check your local law before you buy. Pennsylvania buyers can transfer at our Collegeville shop or at any FFL.
Specifications
- Manufacturer: Shadow Systems
- Model: U526
- UPC: 810120317496
- Manufacturer Part Number: SS-6040-CA
- Model: U526
- Caliber: 5.56 NATO
- Barrel Length Range: 16″ to 16.99″
- Stock Finish Group: Black
- Capacity: 10+1
- Stock Material: Polymer
- Action: Semi-Auto
- Sights: None
- Barrel Finish: Black
- Barrel Material: Chrome Lined Steel
- Twist: 1:7″
- Receiver Description: Picatinny Rail
- Grips: Polymer
- Handguards: M-LOK
- Safety: Safety Selector
- Barrel Description: Spiral
- Barrel Length: 16″
- Max Capacity: 10
- Receiver Finish: Black
- Trigger: Two Stage
- Stock Finish: Black
- Country of Origin: United States
- True Model: U526
Before You Buy
Federal law requires this firearm to ship to a licensed FFL dealer for transfer with a background check. Buyers must be 18 or older. Photos may show a similar model; check the specifications for exact details.
Who It Is For
The Shadow Systems U526 556 16 Black is a great fit for shooters who want a dependable semi-auto rifle for the range, home defense or hunting where legal.
Buy the Shadow Systems U526 556 16 Black at MAG5 Firearms
MAG5 Firearms is a family-owned FFL in Collegeville, Pennsylvania. Order the Shadow Systems U526 556 16 Black online and ship it to your local FFL dealer, or browse our full selection of firearms for more rifles. For factory details, visit Shadow Systems.







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