Showing posts with label Picatinny rail. Show all posts
Showing posts with label Picatinny rail. Show all posts

Monday, March 31, 2014

SigTac CP1 Prismatic Optical Scope (3X)

I'd had my eye on this optic for some time now, and so when PSA dropped their price, I was eager to get a hold of one. The optic is made by ITac (apparently their products are Chinese made, and they are commonly rebranded. Sun Optics sells the exact same scope, but you save about $75 on your Sig Tax) The adjustment turrets are capped, and offer .25 MOA adjustments. The body is aluminium and is anodized black.
View from the right. Note the SigTac branding on the mount.
The integrated mount is secured to a 1913/Picatinny rail by tightening two nuts. This can be accomplished with either a wrench of the appropriate size, or a flat-headed screw-driver.
The ranging tics are intended for 5.56 x 45mm NATO M193 Spec (Federal XM193). The zero is meant to be set at 50 meters if you intend to use the ranging marks. From the 600 meter to the bottom of the thick portion of the reticle is roughly five feet and six inches at 100 yards (168cm @ 100m)
The reticle illuminated red on its lowest setting (so that my camera could capture it in all its glory).
While experimenting with the illumination, I found that none (black) was best during the daytime hours. I spend three hours peering through the glass down the street and observed that the glass is clear enough that no adverse affects were felt aside from the fagigue of holding my left eye closed for such an extended period of time.
For some reason the picture of the green illumination turned out better. Forgive the glare.
During the late evening/nightime hours (late dusk to early dawn), I found that the red reticle was the easiest to make out without obscuring the target too badly. I spent most of the time on the lowest of the five settings.The green illumination I found most useful on its highest setting when I was having trouble making out the reticle against dark backgrounds during daylight hours. This color was too overwhelming for me at night and seemed to overpower whatever I was looking at. If you look at the left of the image of the green illuminated reticle, you will notice a rather pronounced artifact. That is not a trick of the camera, and is present in both this, and the red illumination modes. The severity of the effect is directly related to the brightness of the reticle.

I noticed when looking at the reticle through the scope the wrong way (through the objective lens) that the reticle was visible while illuminated. I had intended to perform an experiment to determine how far away the was visible, but time was prohibitive these past few weeks, so I will have to get back with you in the upcoming weeks, with pictures if at all possible.

Practical technical specs are as follows.

Magnification: 3X
The red and green illumination modes feature five settings each.
The field of view is six degrees or 10.5 meters at 100 meters.
The eye relief is 14.9cm/5.9in..
The exit pupil is 1.02cm/.4in..
Parallax is set at 100m.109.36yd.
For those of you who care, the scope weights 13.9 oz.

Something interesting: The scope includes two crush washers. If anyone knows why, leave a comment.

Monday, December 16, 2013

Damage Industries Multi Mount Sling Mount

Sorry for posting three days late. I fully intended to get back to you on the fourteenth, but came down with a lovely case of food poisoning. So here I am! Back, sore, and eager to bet back on the ball with this young blog.

This was really the second step on my path to building my rifle. I got them as part of one of their weekly deals. This particular deal (one of my favorites), was a "we'll double whatever quantity you order for free*." They offer two quick detach (QD) slots and one loop for a snap hook, Mash hook or cordage (the website says paracord), as well as leaving enough clearance to simply loop a strand of nylon webbing through once mounted on a Picatinny (Mil-Std-1913/STANAG 2324) rail.

The Damage Industries LLC Milti Mount Sling Mount comes
in Flat Dark Earth, Hard Brown, and Black (pictured).
The method for mounting them is rudimentary, requiring the complete removal of the hex key (1/8") before sliding it onto the rail from the very end (which shouldn't be an issue, because there's only really one place with Picatinny rails that you should really be thinking about mounting a sling: as far forward as you can get it).

With the considerable protrusion these accessories , I would be willing to speculate that these could be used as a hand stop in a pinch, albeit with a degree of discomfort, and I definitely would not recommend it as a substitute.

As I mentioned earlier, these will mount to any standard Picatinny rail, so don't be shy about mounting to anything with that style of accessory mounting system, be it AK, M14, Mini-14, 10/22, bolt action rifle, shotgun, whatever. These are made from billet aliminum, and are finished with a "Mil-A-8625 type III class 2 hardcoat anodize" (sic), so I wouldn't worry too much about beating them up. Also, the finish has a bit of a rough texture to it, so I believe that they will take an aftermarket coating (Duracoat, Ceracoat, or even spray paint) rather well, even without prep. For fifteen bucks, I can;t say this was a bad purchase.

Anyway, that's all for now. I'll see you again in a few days with more on parts I have acquired for my build. Thanks for reading. Please leave a comment (keep it clean, and I'll pass it through).


*Not a direct quote.