Caliber 5.56 x 45mm (.223)
Operation Semi-Auto, Gas Operated
Overall Length (Stock Extended) 44.5" (1130mm)
Overall Length (Stock Folded) 35.7" (905mm)
Barrel Length 25.6" (650mm)
Weight (w/o scope) 11.9 lbs (5.4kg)
Weight (w/ Hendsoldt 1.5-6x42mm) 13.6 lbs (6.2kg)
Mag. Capacity 20 or 30 rnd box
Numumber of Grooves 6
Rate of twist 1 in 10"
Made in Switzerland, the SG 550 is one of the few 5.56mm sniper rifles out there. Developed From the SG 550 assault rifle, accuracy is improved by the addition of a sensitive double-pull trigger, and also a heavy barrel. A bi-pod is standard as is a fully adjustable stock. I have no first experience with this weapon, but I suspect that the accuracy should be fairly good, with sub MOA performance.