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

Auto[47]
Auto[47]

Auto-Ordnance Remembers Iwo Jima Fallen With Special M1 Carbine

To commemorate the 80th anniversary of the Battle of Iwo Jima, Auto-Ordnance teamed up with Altered Arsenal to create a specially crafted version of the M1 carbine.

Preview: The Ruger 10/22 Complete Owner’s And Assembly Guide

Scott Duff Publications is renowned for its authoritative titles containing detailed information on iconic military and commercial firearms.

Henry Introduces Two New Special Products Division Rifles: The CRUSR & PREDATOR

Henry Repeating Arms' Special Products Division expanded its offerings with two new rifles in the fall of 2025, the CRUSR and PREDATOR lever-actions.

Preview: Duracell 3000L Tri-Power Lantern

The company renowned for its Coppertop batteries now offers a high-tech take on traditional camp illumination.

Gun Of The Week: Colt Kodiak

The Kodiak, introduced in 2024, is based on the company’s iconic Anaconda design, which was brought back to the market in 2021.

The Armed Citizen® Dec. 12, 2025

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

Interests



Get the best of American Rifleman delivered to your inbox.