December 28, 2010
When you purchase the Ruger SR-556C rifle, it will come in a
box as shown below.
Figure 1

The end of the box was marked with a sticker
shown below stating model number, serial number, catalog number, caliber
and UPC code.
Figure 2

Once you open the box, you see that all the contents of the box are
inside this black Ruger soft case.
Figure 3

The soft case has Velcro loops to secure the
rifle against the side of the case It also has two pockets to
hold the other two Magpul PMAG 30 magazines.
Figure 4

Inside the case were the following items and are
shown below with a light background for clarity:
-
SR-556C Rifle
-
Three Magpul PMAG 30
Standard Magazines
-
Three
Troy Industries MFR 2EZ11 Rail Covers
-
Sight Adjustment Tool
-
Gun Lock
-
Instruction Manual
-
Owner Notification Card
-
Ruger Safety Conversion Card for older single action revolvers
Figure 5

The features and specifications shown below in
colored italics were taken directly
from the Ruger website on 12/27/10. As I performed the review,
I verified certain features and specifications and have made
comments beside items as
necessary to provide further clarification.
Features
-
Two-Stage Piston With Adjustable Regulator
provides a cleaner, cooler running, reliable firearm with
superior operating endurance. The two-stage piston
provides a smooth power delivery stroke to the bolt carrier.
The four position gas regulator can be adjusted for optimum
reliability and superior operating endurance. The gas
system may be closed completely for manual operation during
training or when using a suppressor.

-
Quad Rail Handguard provides four Mil-Std 1913
Picatinny rails, and is in alignment with the flattop receiver,
providing ample space for mounting sights, lights, lasers or
other accessories.

-
Troy Industries Folding BattleSights™ provide a
windage adjustable rear sight and an elevation adjustable front
sight that co-witness with Mil-Spec optics and can be easily
removed to make room for advanced optics. The sights can
be folded down with the simple push of a button or flipped up
with your thumbs.
-
6-Position Telescoping M4-Style Buttsotck
houses a Mil-Spec buffer and spring.

-
Cold Hammer-Forged, Chrome-Lined Mil-Spec 41V45 Barrel
ensures accuracy and longevity.

-
Hogue® Monogrip® Pistol Grip adds
comfort when carrying or shooting.

-
Magazines: Supplied with three MAGPUL PMAG™
30-round magazines (a lightweight 5.56 NATO magazine).

-
Also Features: chrome-plated bolt, one-piece
bolt carrier and extractor, rail covers and soft case.

Specifications
-
Catalog Number: SR-556C

-
Model Number: 5905

-
Caliber: 5.56mm NATO/.223 Rem.

-
Stock: Black Synthetic, Collapsible

-
Finish: Manganese Phosphate/Hardcoat Anodized
(Manganese Phosphate on steel parts,
Hardcoat Anodizing on aluminum parts)
-
Sights: Folding BattleSights™
(by Troy Industries)
-
Height: 7.75"
-
Barrel Length: 16.12"

-
Overall Length: 31.00" - 34.25"

-
Width: 2.50"

-
Weight: 7.40 lbs.
(I measures 7.414 pounds for the gun with
sights only and no rail covers or magazine)
-
Twist: 1:9" RH

-
Grooves: 6

-
Length of Pull: 10.25" - 13.50"

-
Capacity: 30
(Based on the provided Magpul
magazines. Accepts standard magazines and capacity can
change based on what magazine you use)
-
MA Approved & Certified: No
-
CA Approved: No
-
Suggested Retail: $1995
The photos below show some overall views of the
Ruger SR-556C rifle. As with most photos in my reviews,
clicking on them will bring up a high resolution photo showing more
detail.
Figure 6

Figure 7

Figure 8

Figure 9

In the next section,
Part 3
of this review, I cover the externally
visible features of the rifle in great detail and show even more
overall photos of the rifle. You can go back to
Part 1 of this review for
links to all the other parts of the review.
Or
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