Based on the legendary SG 550, the SIG556xi will change the way military, law enforcement, and responsible citizens look at adaptable rifles. Utilizing the time-tested rotating bolt and adjustable gas piston operating system, the SIG556xi allows operators a choice of caliber, barrel length, handguard/stock configurations and lower receivers.
A removable barrel allows the operator to select the necessary length for a given mission. Adding the appropriate bolt, the SIG556xi can be changed to any of three calibers, 5.56x45mm NATO, 300 Blackout, and 7.62x39mm NATO. Users can also quickly change out the non-serialized lower receiver, allowing the use of either AR-style STANAG magazines or rock-and-lock AK-style magazines. The SIG556xi upper receiver is the serialized part, making the lower an easy to purchase part.
Polymer handguards accept all Magpul® light and rail kits, while the aluminum and carbon fiber handguards accept 2”, 4”, and 6” M1913 rails. Barrels are available in 10”, 14.5”, and 16”. Truly ambidextrous, the SIG556xi features an ambi safety selector, magazine release and user swappable charging handle (right- or left-handed).
The Russian lower has been thoroughly function tested with most available AK magazines.
Sig Sauer's new SB15 Stabilizing Brace will give you improved accuracy and reduced recoil when shooting an AR-pistol with buffer tube. The unique design uses the forearm to provide a natural and comfortable rest for shooters of all sizes and physical ability.
- 3-Position Gas Piston Operating System with Rotating Bolt
- Ambidextrous Controls
- Swappable Charging Handle
- Locking Flip-Up Front/Rear Sights
- ATF COMPLIANT
- U.S. VETERAN DESIGNED
- MADE IN THE U.S.A.
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This item is new in the box comes with everything included from the manufacturer
If item is not as described we do have a 3 day return period
A 10% Giftcard can be applied to this product!