Firearm suppression is done best when used with bolt-action rifles.  There are several reasons for this.  First, longer barrels help reduce the amount of pressure as the bullet travels further before leaving the weapon.  Second, the only egress point for gas is the muzzle.  The slide or bolt does not automatically cycle thereby exposing the ejection port like other rifles or pistols.

When an AR-15 is fired suppressed, there are 3 sources for noise:

1. The muzzle
2. The ejection port
3. Sonic crack of the projectile

The muzzle blast is controlled by the suppressor and therefore cannot be improved much.  The ejection port will most likely cycle as the weapon was designed.  The subsonic crack will more than likely be present unless using subsonic ammunition.  So you see there are many things needed to make an AR-15 quiet, but in the end it's expensive and still not very efficient.

A bolt action rifle such as a .22 caliber is a perfect host for a suppressor.  There are several reasons that make it much better than an AR-15 or even most pistols:

1. A .22 contains very little gun powder.
2. Subsonic ammo is cheap
3. There is no ejection port

A bolt action .22 will be very quiet even with supersonic ammo like .22 LR.  Using subsonic ammo only makes it better.  You will not have the cycle issues with subsonic ammo in a bolt action because the weapon is not designed to cycle automatically.  The shooter must manually work the bolt action to eject a spent cartridge and load a new one.  Suppressors for .22 caliber is much cheaper than other calibers and some can even be used with variations of the .22 like the 5.7x28mm or 17 HMR.

NCstar makes a lot of accessories for various weapons. The make tools, optics, lights, lasers, you name it. I have purchased several things from NCstar and was not happy with any of it. It is low quality gear from China that simply does not hold up and is a complete waste of money.

I purchased a Mark III 4-8x32 illuminated scope with a laser. I paid roughly $175 for it and after 1 trip to the range it started to flake out. The illumination has different levels of brightness. As you move the knob on the side it adjusts the brightness and will activate the laser. Between clicks the illumination would flicker. You would have to wiggle the knob back and forth to get it to stay on, and once a shot is fired, the recoil turns off the illumination. The laser was just as bad. One mode activates only the laser, another will activate the laser and scope illumination. I can never get the illumination and laser to work at the same time. The quick release mount is shoddy at best. I doubt the optic will hold a zero when take off and put back on.

Overall, I wasted $175 I could have put towards an EOTech or other quality optic. Is it still useful? Yes, baring the illumination, laser, and holding a zero, it will still function as a standard optic. Does it compare to a quality optic like a ACOG or Larue? No way, and you can't expect it to for $175. Although, I think this optic would be great for something with less recoil. Say a .22 or maybe a .17 HMR.

I have also purchased things such as bi-pods, lasers, and tools.  The b-ipods are terrible.  They mounting has too much play and the over construction isn't strong enough to make the bi-pod useful.  Lasers were dim and had poor distance.  The only worthwhile thing I purchased was an AR-15 multi-tool wrench that I used to replace some components of my AR.  It has held up and worked out fine.

Bottom line, save your money for better products.  It's better to spend more the first time, then have to re-buy something because the first one sucked.

When it comes to optics, EOTech is one of the best know names in the industry. EOTech produces non-magnified "holographic" optics. Holographic is a red-dot optic that only shines one way. Meaning, the shooter can see the circle and red-dot (known as a reticule) when looking at a target. From the target side looking at the shooter, the reticule is not visible. Traditional red-dot sights will have a visible reticle from the target side and possibly giving away the shooters location.

This provides an obvious tactical advantage which is one reason it is widely used among law enforcement and military. The reticule is also adjustable for different lighting and works well in both dim and bright lights. Battery life is okay, but there are other alternatives on the market which outperform the EOtech in that department. As I mentioned before, the EOtech in non-magnified, which is also referred to as 1x magnification. I'm not sure why they don't just list it as 0x but whatever. Non-magnified optics are used when the shooter needs to quickly engage a target and keep both eyes open. Shooting with both eyes open allows the shooter to be more aware of his/her surroundings.

EOtech makes various models and some are night vision compatible meaning if the shooter is looking through night vision, the reticule will still be visible. However, NV-capable does add $100 to the price tag so don't buy it if you're never going to use it. Durability is another great thing about the EOtech products. They are tough and built to withstand various types of harsh treatments. Temperature, humidity, submersion, and impact are part of product development.

I personally dropped my rifle on an asphalt parking lot and my EOTech XPS took the entire impact. It left a nasty scratch on the hood of the optic, but it still works great.

Beware of knock-offs. There are some floating around online and most of them are still pretty expensive. I can guarantee they won't hold up when dropped like mine did. The glass used in the optics will show reflection unlike the genuine ones, and the buttons don't hold up either. I have compared mine to a fake while in a very humid indoor range, and fake started to show a very blurry reticule which was almost un-usable.

If your are going to spend the cash, get a real EOTech and make sure you get one from a reputable seller. The models shown below are guaranteed to be genuine and one even comes with the flip to side magnifier, a must for long distance shots.