SIG Sauer SG 550

GunCritic Score

 
Critic Rating Icon
86%

Critic Rating

4 Reviews

Guncritic User Rating
50%

User Rating

0 Reviews

MSRP:$789.99
Used Price:
$631.99
Sale Price:
$789.99

Ballistic Stats

 
Average Fps
3200 fps
Average Energy
1254 ft-lbf
Recoil
5.1 N
Ballistic Coefficient
0.24
Sectional Density
0.16 lb/in²
Average Gr
55 gr
Pwdr Chrg Wght
21.5 gr
Pwdr Chrg Vel
3240 fps
Range
600 yd
Muzzle Velocity
3100 fps
SIG Sauer SG 550
SIG Sauer SG 550
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Designed in cooperation with SIG and special police force units. Medium heavyweight barrel with attached flash hider, ribbed and ventilated handguard with folding adjustable bipod, standard receiver markings, ambidextrous safety, spring secured scope mount numbered to the gun with Hensoldt Wetzlar ZF1.5-6x BL scope, cant adjustable textured grip with adjustable hand rest, and folding buttstock with adjustable comb and buttplate.

SIG Sauer SG 550 For Sale

Technical Data

Gun Type AR

Gun Type

AR

Weight 144 oz

Weight

144 oz

Capacity 30+1

Capacity

30+1

Length 39.3"

Length

39.3"

Finish Black

Finish

Black

Sights Iron Sights

Sights

Iron Sights

Rear Sight Adjustable

Rear Sight

Adjustable

Action Gas-operated

Action

Gas-operated

Barrel Length 20.8"

Barrel Length

20.8"

Caliber 5.56x45mm

Caliber

5.56x45mm

Sig Sauer Sg 550 Capacity

The SG 550 is chambered in 5.56x45mmNATO (.223 Remington) and feeds from proprietary, translucent polymer detachable box magazines.  The most common of these hold 30 rounds while smaller 10 and 20 round magazines are available.  The mags are loaded into the gun similar to an AKM with a “rock and lock” motion.
Sig Sauer Sg 550 Capacity

Sig Sauer Sg 550 Feature

The SIG Sauer SG 550 is the first in a series of gas operated rifles based on an AKM style action.  This rifle uses a long-stroke gas piston and 2-lug rotating bolt and is built with a 20.8 inch barrel topped with a hooded front sight and a range-adjustable diopter sight at the rear.  The 550 model can be equipped with a folding bipod that folds into the handguard.
Sig Sauer Sg 550 Feature

Sig Sauer Sg 550 Ergonomics

The SG 550 feels like a hybrid of a bunch of rifles.  The stock and the optics give it a feel similar to the G3, the pistol grip feels very similar to the FN FAL, the controls largely take from the AKM, the safety is located similarly to the AR15, and the handguard offers a forward grip that feels reminiscent of an M16A1.
Sig Sauer Sg 550 Ergonomics

Sig Sauer Sg 550 Mobility

The SG 550 measures 39.3 inches long and has an unloaded weight of 9.04 pounds making it as long as an M16A2 and making it approximately 2 pounds heavier.  The SG 550’s saving grace is its folding stock that can reduce the overall length to under 30 inches for navigating through tight spaces.
Sig Sauer Sg 550 Mobility

Sig Sauer Sg 550 Fit-N-Finish

The handguard, pistol grip and stock are made of high-strength polymers while the rest of the parts are made of hardened steel.  This rifle is built with stamped receivers and has a rather complex maintenance procedure when compared to an AR or AK.  The bolt assembly disassembles through a strange order of operations that are designed to ensure reliability and accuracy.
Sig Sauer Sg 550 Fit-N-Finish

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SIG Sauer SG 550 Specifications

Category
Gun Type
AR
Weight
144 oz
Capacity
30+1
Length
39.3"
Finish
Black
Sights
Iron Sights
Rear Sight
Adjustable
Action
Gas-operated
Barrel Length
20.8"
Caliber
5.56x45mm

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