Once the 556 was equipped with optics and other accessories, it was time to take it to the range and see what it could do. I had a mixed bag of 5.56 ammunition that I used to zero the CQ/T because I didn't want to burn through premium ammunition getting the scope on paper. I know that many folks will disagree with this, but from past experience I have found if you get on paper with generic 5.56 ammo, you don't have to use as much good ammo to tweak zero.
Once I had the 556 zeroed, I loaded the magazines with 60-grain Hornady TAP FPD and Black Hills V-Max ammo. These loads have proven to be wicked accurate in my other 5.56 chambered rifles; I figured the 556 would follow suit.
I was not disappointed; the SIG shot both loads well. I fired 10-shot groups of both loads at 100 yards off the Wilcox Steady Grip/bipod.
The Hornady TAP FPD barely edged out the Black Hills V-Max by one-sixteenth of an inch. Both loads cloverleafed several rounds, but it was a balmy 12 degrees when I was shooting so my shivering may have pushed the group out to 1.25 inches. I am certain on a more climatically agreeable day I would have produced sub-MOA groups with the 556 with Hornady TAP and Black Hills V-Max 60 grain loads. This rifle is simply that accurate.
For grins I decided to try the 556 with 52-grain Black Hills Match Hollow Points, remanufactured. I did not adjust zero, simply sighted in and let fly. At 100 yards the 556 kept 10-round groups at less than two inches, about an inch high from point of aim.
Making It My Own
The 556 coupled with the Leupold Mark VI CQ/T is a versatile weapons system. I was so impressed with the 556 and the CQ/T that I have permanently added them to my vault. Planning to keep this rifle, I made a few additions. I attached a front clamp Sling Thing from GG&G with its quick detach sling loop and a Spec Ops Brand Mamba Sling, and I applied Lauer's Duracoat to it in ABU camo.
The Sling Thing is a rock solid mount for its pivoting sling swivel. When coupled with the sling swivel on the CRT and Spec Ops Brand's Mamba, the 556 lays flat on my chest, allowing access to my backup weapon, handcuffs, or anything else I need two hands for.
I coated the 556 and CQ/T with Dura Coat because I wanted my rifle to be unique, plus it makes the weapon easier to clean. Coating the rifle in a camouflage pattern also allows the rifle to blend into its environment; basic black stands out in a desert or brush setting. This finish also makes the weapon's system more corrosion resistant. For duty, being able to clean the weapon more easily and to protect it from the elements are both major pluses.
What is my opinion of the SIG 556? I purchased it; how much more can I approve of a firearm? This carbine is versatile, reliable, and simply dependable. The 556 can function as a patrol vehicle weapon or a SWAT weapon; with a telescopic sight it can function in the role of sniper and/or counter sniper rifle; and, if you get the urge, it can be used for competition. Simply put, the SIG Sauer 556 is a fine tool.
SIG Sauer 556 SWAT Rifle
Leupold MK IV CQ/T
Spec Ops Brand