Especially on an older SP1 rifle or M16 clone. The little scopes are a neat little piece of AR15 history and they are a lot of fun to shoot with. Inside was simple instructions on how to zero and use and take care of the optic. The copes came in a cardboard box with leather end caps to protect the glass. They can be used for some pretty decent precise shooting in reasonable conditions. 3x and 4x are still usable and hunters and snipers of years and wars past used scopes not even as powerful as 3x for serious work. Now they are too collectible and slightly rare to be out using for much more than fun anyways. I think the days of this being your only choice for an optic for your AR/M16 may be over. It is something a cheek rest could remedy, but why bother. Like all carryhandle mounted scopes, there is the usual issue with cheek weld. Other than the older models having a slightly shinier finish than the newer made ones, the y are nearly identical. They did see actual combat use from Vietnam to the first Gulf War.Įxcept for a few very early makes, the Colt optic is usually marked Made In Japan. They are not ACOGs, so they can not take that kind of abuse. Of course you can find some that have been used and abused and see some narfed up glass. I have never been much of a post fan myself. The crosshairs for the scopes came as a post of a duplex crosshair. Even later models can safely assumed to be matched for the M193 type load. At the time there wasn’t much else out there. The optic is calibrated for the M193 military load which is the 55 grain bullet. The BDC does match and work pretty well and it is repeatable on all of the examples I have tried over the years. Once the optic is zeroed at 100 yards, the BDC can be used for fast and easy range adjustments. The rear of the optic is adjustable for parallax.
ll adjustment values are 1/4 inch per click. Windage adjustment is on the right side of the scope body and can be adjusted after removing its cover. To do this you remove the top cover to gain access to the finer adjustment screw. The optics have a BDC turret that can be used after finer zeroing at 100 is done. Once the optic is installed, the iron sights on the rifle or carbine can still be used. A threaded post protrudes out the bottom and a lever is used to tighten the assembly to the underside securing it tightly into the carry handle slot. The optic attaches to the carry handle of the upper by using the hole in the center. It is one of the first optics to ever be designed specifically for the AR15/M16 and was used during the Vietnam war.
Almost as long as the AR15 it was meant for. The colt 3×20 and 4x 20 scopes have been around a long time.
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