The SIG Sauer SIG556 Classic is a semi auto rifle that is styled after the original SIG 550 series. This SIG556 incorporates a 5.56 NATO chamber, classic style handguard and folding stock, rotary diopter rear sight, two position gas piston system, and accepts standard AR-15 magazines.

Specifications and Features:
SIG Sauer SIG556 Classic Semi Auto Rifle
5.56 NATO chamber accepts .223 Remington
16" cold hammer forged barrel
1:7 twist rate
30 rounds
Gas piston operated, multi lug rotary locking bolt
Flat top upper
Adjustable gas block
Two stage trigger
Ambidextrous safety
Ergonomic pistol grip with storage compartment
Polymer Classic handguard
Rotary diopter rear sight
Classic folding stock
Accepts AR-15 magazines
Length: 35.875"
Weight: 8.2 lbs