Sig Sauer 556 XI (R556XI-16B-C)

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5.56mm, Folding Stock, Accepts any MIL-SPEC AR-15/M4/M16 Mags

The evolution of the SIG556® platform, the new SIG556xi gives you unparalleled modularity in barrel length, caliber, magazine type, and stock configuration. A folding stock combined with ambidextrous magazine release, bolt release, safety selector and charging handle. Accepts any MIL-SPEC AR-15/M4/M16 or most AK-style magazines depending upon lower. Available with a polymer or aluminum handguard.


- 3-position adjustable gas piston operating system with rotating bolt
- Swiss-style folding stock with removable cheek riser
- Ambidextrous controls
- Locking flip-up front and rear sights
- Polymer handguard (compatible with Magpul® MOE® accessories)
- Caliber convertible: 5.56 NATO / 7.62 x 39mm / 300 Blk

 Item Number R556xi-16B-C, R556xi-16B-S (Aluminum Handguard)
  Caliber 5.56mm NATO
  Overall Length 35.8 in / 912.9 mm
  Rifling 1 in 7in
  Number of Grooves 6
  Barrel Length 16.0 in / 406.4 mm
  Weight w/out Mag 7.1 lb / 3.22 kg
  Mag Capacity 30 Rounds
  Accessory Rail Yes
  Options Swiss-Style Folding Stock with Removable Cheek Rest, Ambi Controls, Locking Flip-Up Sights, Also Available with a Aluminum Handguard

More Information
Law Enforcement N/A
Color No
Display Actual Price In Cart
Manufacturer's Suggested Retail Price 1,399.95
Manufacturer Sig
Hand N/A
Action N/A
Caliber N/A
Type Rifle
Barrel Lining N/A
Barrel Rifling N/A
Barrel Length N/A
Barrel Profile N/A
Trade-In N/A
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