Starting with the SIGM400 carbine, the SIG SAUER improved take on the direct impingement AR-style rifle, a B5 Systems SOPMOD 6-position telescoping stock, pistol grip, and KEYMOD carbine handguards are added in gray or foliage. The SIGM400 B5 Pistol also sports the B5 grip and KEYMOD handguards, all in Flat Dark Earth (FDE).
Featuring 1:7 twist with Nitride treated barrel, the SIGM400 B5 carbines and pistols are machined from 7075-T6 aircraft grade aluminum and are finished in hard coat anodize finish. Both come with SIG SAUER locking flip-up rear sights and have M1913 Picatinny flat-top upper receivers.
Caliber 5.56mm NATO
Overall Length 32.3 in - 35.6 in / 826mm - 904 mm
Rifling 1 in 7in /178 mm
Number of Grooves 6
Barrel Length 16.0 in / 406 mm
Weight w/out Mag 6.7 lbs / 3.04 kg
Mag Capacity 30 Rounds
Accessory Rail Yes
Features B5 Systems SOPMOD 6-position telescoping stock, pistol grip, and KEYMOD carbine handguards, B5 grip and KEYMOD handguards