SIG Sauer 556xi

by
posted on January 15, 2014
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
sig_556-xi.jpg

 

SIG Sauer had no shortage of new releases to roll out at its private media event at SHOT Show 2014, but few created as much buzz as the 556xi.

A continuation of the SIG 556 line-which itself was based on the legendary SG 550-the 556xi line is designed to change the way military, lawn 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, 5.56x45 mm NATO, 300 Blackout, and 7.62x39 mm. 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.

 

See the SIG 556xi in action by clicking on the video embedded below.

For more information, go to SigSauer.com.

Latest

6.5 Creedmoor
6.5 Creedmoor

Review: Federal's 6.5 Creedmoor +Peak Ammunition

Federal’s new 6.5 Creedmoor +Peak takes a long-range staple even farther.

New for 2026: Pulsar Thermion 3 Riflescope

Pulsar’s newest thermal scope offers longer range, sharper detail and expanded functionality.

AKs In The USA: The Current State of the American AK Platform

Despite it being the primary rifle of the enemy for most of its existence, American shooters have nonetheless warmed to the AK platform, creating an unlikely love story.

Demand for Guns, Ammo & Firearm Accessories Accelerates

October gun sales increased according to the National Shooting Sports Foundation (NSSF) estimate, but the quarterly reports from major manufacturers reflect purchases significantly higher.

The Armed Citizen® Nov. 9, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Review: Canik MC9 Prime Radian

This Canik MC9 Prime uses Radian Weapons technology.

Interests



Get the best of American Rifleman delivered to your inbox.