For those looking for an optic-ready platform, the SIGM400 SRP removes the front sight tower and replaces it with an M1913 railed front gas block. This sight ready platform allows the operator to mount any optic without worrying about the sight tower. The gas block accepts all iron sights designed to work on the Mil-Spec Picatinny rail.

THE SIGM400 Series Tactical Rifle, designed for use in law enforcement, military operations, or the sporting field as well as competitive shooting. The SIG M400 is a true AR platform tactical rifle. Provides unparalleled accuracy, with a 16" Nitride treated barrel that provides maximum durability and corrosion resistance. A 7075-T6 aircraft grade aluminum forged lower receiver adds to the durability and reliability.

Features:

Direct Impingement Gas Operating System with Rotating Locking Bolt
5.56x45mm NATO Nitride Treated Barrel with Phosphate Finish
Accepts Most M16 Type Magazines
M16A2 Type Flash suppressor
Aluminum Quad-Rail Forend
Integral Ambidextrous QD Sling Mounts
Sight Ready Platform
Low-Profile Gas Block with M1913 Rail

Specifications:

Caliber: 5.56mm NATO
Barrel Length 16".0 in / 406.4 mm
Magazine Capacity: 30 Rounds
Rifling: 1 in 7"
Number of Grooves: 6
Length: 32.3" with Stock Extended: 35.6"
Weight: 6 lbs
Finish: Black
California Compliant: No
Massachusetts Compliant: No
New Jersey Compliant: No
New York Compliant: No