I got one and ended up putting it on a BB gun goes it wasn't worth it. I should have known better but made an impulsive decision the cost me some $$$.
After using it at a 35 yard range with a LWRC 5.56 rifle, here's my review of the SPARC.
Initial impressions: Heavier than Aimpoint T-1 and larger, good build quality, with O-rings on elev/windage cover knobs and battery compartment for waterproofing. Rubber covers cheap quality and broke as expected in one day. After-market covers a must if important to you. Looking through the glass, it's obvious cheaper quality than American (SPARC made in China). Clarity is not there, and color has a darkened bluish green tint. Both Aimpoint and Trijicon has much higher quality glass. Red dot turned on has streak/burst-like effect, rather than a crystal clear small dot. Therefore, even though it's "2MOA" size - it seems bigger.
Range result: Knob clicks are soft and hard to distinguish. During zero-ing, I was not sure at first how many clicks so it wasted rounds. However, after moving knobs several times in both directions - it actually clicked louder and more noticeably so adjustment was not difficult thereafter. It took about 20-25 rounds to get the zero reliable and consistent.
After the initial bench zero-ing, this is where the red dot really took off. After initial impression of poor optics clarity and red dot burst - I didn't expect much. However, I shot standing rapid fire in a tactical drill against my shooting buddy. He used iron sights, and I used red dot (without 2X mag). I was consistently faster and very accurate. On one 8 shot group, I hit within 2 inches on virtual rapid fire. It was very easy to get back on target after each recoil with the red dot. It goes to show that a red dot is what's useful in a CQB tactical situation, not necessarily the quality of optics or the dot itself. This last point is arguable, especially from those that paid $700 for an Aimpoint T-1/Larue combo - but results at the range showed great results with cheap this cheap China product.
As far as the 2X mag, it's worthless after mounting. First, the whole point of a red dot is speed and effectiveness at close quarters. The 2X mounted reduced the eye relief to unacceptable 1.5 to 2 inches. Any farther, and the tunnel shuts out the view. Also, the optics is further degraded by the 2X magnifier making the magnified virtually unusable even with eye jammed up close. Lastly, how effective is a CQB optic when you have to stop shooting and screw an optic on with people shooting back at you?
One last comment, Aimpoint T-1 and H-1 has no parallax but SPARC had noticeable parallax at close range. With good cheek weld and training, it was not an issue with accuracy in my case. However, it's another negative worth mentioning.
Conclusion: Vortex SPARC will not replace Aimpoint's high quality red dots. However, as a cheap entry or alternative - it's good enough as a range toy and/or SHTF back-up. I now mount mine on an angled mount in front of my Trijicon TA33. It works perfectly in my set-up because I just want a go-to sight when things are too close for the 3X Trijicon. And it saved me $500 over T-1/Larue combo. The SPARC is perfect for my set-up. However, for those that wants a bullet-proof primary sight - you know what you have the brand you have to go to.
After using it at a 35 yard range with a LWRC 5.56 rifle, here's my review of the SPARC.
Initial impressions: Heavier than Aimpoint T-1 and larger, good build quality, with O-rings on elev/windage cover knobs and battery compartment for waterproofing. Rubber covers cheap quality and broke as expected in one day. After-market covers a must if important to you. Looking through the glass, it's obvious cheaper quality than American (SPARC made in China). Clarity is not there, and color has a darkened bluish green tint. Both Aimpoint and Trijicon has much higher quality glass. Red dot turned on has streak/burst-like effect, rather than a crystal clear small dot. Therefore, even though it's "2MOA" size - it seems bigger.
Range result: Knob clicks are soft and hard to distinguish. During zero-ing, I was not sure at first how many clicks so it wasted rounds. However, after moving knobs several times in both directions - it actually clicked louder and more noticeably so adjustment was not difficult thereafter. It took about 20-25 rounds to get the zero reliable and consistent.
After the initial bench zero-ing, this is where the red dot really took off. After initial impression of poor optics clarity and red dot burst - I didn't expect much. However, I shot standing rapid fire in a tactical drill against my shooting buddy. He used iron sights, and I used red dot (without 2X mag). I was consistently faster and very accurate. On one 8 shot group, I hit within 2 inches on virtual rapid fire. It was very easy to get back on target after each recoil with the red dot. It goes to show that a red dot is what's useful in a CQB tactical situation, not necessarily the quality of optics or the dot itself. This last point is arguable, especially from those that paid $700 for an Aimpoint T-1/Larue combo - but results at the range showed great results with cheap this cheap China product.
As far as the 2X mag, it's worthless after mounting. First, the whole point of a red dot is speed and effectiveness at close quarters. The 2X mounted reduced the eye relief to unacceptable 1.5 to 2 inches. Any farther, and the tunnel shuts out the view. Also, the optics is further degraded by the 2X magnifier making the magnified virtually unusable even with eye jammed up close. Lastly, how effective is a CQB optic when you have to stop shooting and screw an optic on with people shooting back at you?
One last comment, Aimpoint T-1 and H-1 has no parallax but SPARC had noticeable parallax at close range. With good cheek weld and training, it was not an issue with accuracy in my case. However, it's another negative worth mentioning.
Conclusion: Vortex SPARC will not replace Aimpoint's high quality red dots. However, as a cheap entry or alternative - it's good enough as a range toy and/or SHTF back-up. I now mount mine on an angled mount in front of my Trijicon TA33. It works perfectly in my set-up because I just want a go-to sight when things are too close for the 3X Trijicon. And it saved me $500 over T-1/Larue combo. The SPARC is perfect for my set-up. However, for those that wants a bullet-proof primary sight - you know what you have the brand you have to go to.
Thanks Calengor for hooking me up to this site, and the group buy on SPARC. I'm in ATL but wish I could shoot with you fine Maryland folks. Regards.
Excellent review. Pretty much expands on my original post that the sparc is not a T-1 but it is good for use for casual users and I use 2 of them on my dedicated spikes .22 m4 and a 5" 9mm ar that i use for local 3-gun.
When retrieving the battery today, it turned on properly. Don't know what went wrong yesterday when it didn't turn on. I'll assume it's my bad, and update again if there's problems.
This is an old thread, but wanted to provide an update given my post about battery life.
I used this on a 556 rifle since April 2010. Although I don't shoot it everytime, I make it a point to turn it on every time at the range to test battery life. I leave it on, and it auto shuts off after 6 hours. The battery since new just died this week. That's over one year - pretty great for an Aimpoint clone. I have Aimpoints on my primary rifles now, and moved the SPARC on my shotgun. That's a lot of fun.