Okay, so here’s the problem I’m having. I have a 20” flat-top AR-15 with an NCSTARdetachable carry handle mount with the built in A2 rear sight. On the front, I have an KNS Precision extrathin front sight point, with fine ball top mounted in place of the standardfront post.
I was out at the range today with the wife and it shot greatat the 25 yard where we took it out. Thiswas expected as I had it previously zero’d for this distance with the rearsight set at the ‘Z’ mark.
To finish out the outing, I wanted to try it out at the 100yard range using some of the IMC’s we reviewed last weekend at a localAppleseed shoot. Here’s where theproblems arise…
I knew I’d have to crank the rear sight down in order to getit back centered on the 12”x12” shoot-n-see targets we had mounted. I was initially estimating the bullet hit POI+/-3” high without the rear sight adjustment, so I cranked the rear sight down12 clicks for 3 MOA. Well, long storyshort, after some not-so-useful input from my ‘spotting partner’, I eventuallyhad my shots centered after 22 CLICKS downon the rear sight. So I’m thinking, 22clicks = 5.5” of vertical movement at 100 yards. Something’s not right with the ballisticshere I think.
So I’m wondering this. Since the rear sight will do more than a whole complete turn for changein elevation, did I zero the rear sight at 25 yards in the incorrectposition? Or could that amount of clicksactually be correct? To me, somethingdoesn’t seem to be adding up?
After finally getting it zero’d on that setting, I didre-confirm that it truly was 22 clicks to bring it back to the Z setting.
Does anyone have an idea what could be going on? Another issue to leads me to believesomething is off is that the front sight top is sitting slightly higher than the front sight guard ears,which almost suggests something may be off.
I know the NCSTAR isn’t the most fabulous detachable carryhandle sight, but the adjustment clicks are very firm and audible, somis-counting the clicks is pretty difficult to do.