Indirect gas operation with rotating bolt is rugged and functionally
dependable. It reduces the recoil to a minimum and guarantees the
function even under the most extreme service conditions. Gas operation
is not sensitive to various types of ammunition, varying gas pressures
and different case materials. Maximum safety for the shooter as
premature unlocking of the bolt through overpressure is not possible.
The gas pressure of the rifles can be regulated if the weapons are
heavily fouled. The indirect gas operation prevents the bolt and
receiver housing from fouling by propellant gases. The gas system can be
removed as a complete assembly that is easy to clean. No exaggerated
cyclic rate (excess energy); hence, lower stress levels of the weapon
and better control during fully automatic fire.
SG 552 Commando
An extremely flexible, very compact and light primary intervention
weapon for special forces and law enforcement officers. Accurate,
powerful and operationally versatile, the compact weapon uses caliber
5.56 mm x 45 NATO (.223 Rem.) for short and medium range assignments up
to 300 meters. Its terminal ballistic performance is clearly superior to
the submachine gun.
Barrel
Tempered, cold hammer forged and heat treated 7” or 10” rifling twist
heavy barrel, chamber and bore forged simultaneously, with screwed
3-prong flash hider.
MIL-STD-1913 Picatinny 4-rail
fore-end
The very light but robust Picatinny 4-rail fore-end offers a second top
rail that enables simultaneous mounting of optical and night-vision
sights.
The side rails accept lasers and tactical lights, the lower rail a
vertical fore-grip and/or bipod. The fore-end can be mounted or removed
in seconds without tools.
TECHNICAL DATA SG 552
Commando
Caliber5,56 mm
(.223 Rem.)
Overall
length
730 mm; 28.74”
Overall hight
210 mm, 8.27“
Length with butt stowed
504 mm; 19.84”
Barrel length
226 mm; 8.9”
Rifling Lead
178 mm (7”),
254 mm (10”)
No. of grooves
6
Sight base
360 mm; 14.17”
Weapon weight
3,2 kg; 7.05 lbs.
Magazine capacity
5, 10, 20, 30
Mag.
Weight with 20, 30 rounds
340, 480 g; 11.99 , 16.93 oz.
Compat
weight with 120 rounds
5,2 kg; 11.46 lbs.
Weight
of empty mag. 20, 30
95, 110 g; 3.35, 3.88 oz.
