Robocop1051 Posted December 1, 2012 Report Share Posted December 1, 2012 My only complaint about the Magpul MBUS sights has always been the front sight post. On my .308 I swapped out for a Trijicon tritium post (See that thread HERE ). I realized quickly that was a waste as I don't shoot at night, and tritium doesn't do much for me during the day. Based on online reviews, I tempted fate, and purchased a Mounting Solutions Plus "Sightlink" fiber optic front sight post. I guess I was lucky with the Trijicon post as that was a simple drop in part... Not so with the Sightlink! While it is threaded the same, that is where similarities end. 1. Sightlink requires it's own front sight detent. 2. Above said detent does not fit in a Magpul MBUS, which uses a special polymer detent.3. God's greatest gift, after fire, was the dremmel! I will not be deterred!Sorry I didn't take pictures as I worked. First I had to create a detent hole. I dropped in the rotary tool and made a perfect fit. Next, I fount the detent was too long for the hole and I couldn't adjust the sight post down far enough. Again I went to the rotary and I cut about 25% off the bottom of the detent. I cleaned up the edges and it fit perfectly. Last was the grueling labor part. The nipple on the detent was out of alignment due to space confinement on the sight. I couldn't move the detent any further without risking the integrity of the sidewall. Using a small file, I carefully took off about 1/3 of the detent nipple, creating an offset nipple. This was painstaking work as I filed, check for fit, filed, check for fit, filed.....Eventually I was able to make a perfect fit and I am ecstatic about the results!A little more about this sight post. This is the "Match Grade" sight. It is considerably thinner than the mil post. It also has 8 adjustment points instead of 4. The top and bottom of the post spin freely from each other so that the fiber optic can be aligned with your line of sight. This sight also comes with replacement fiber. I have two 4" strands of fiber (one in red and one in green) that I can use to replace. Simply push it out with a pin, slide in a new one, then hit one end with a lighter to secure it in place. So far it looks really good, and is a hell of a lot brighter during the day! Quote Link to comment Share on other sites More sharing options...
unforgiven Posted December 1, 2012 Report Share Posted December 1, 2012 So when adj. you can only turn 180*? So then you have a compromise in adj.? <dontknow> Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted December 1, 2012 Author Report Share Posted December 1, 2012 So when adj. you can only turn 180*? So then you have a compromise in adj.? <dontknow>No. Normally a military style post has 4 adjustment points, every 90 degrees. This post has 8, every 45 degrees. The top of the post spins freely from the bottom. You adjust the bottom for elevation, then spin and lock the top for line of sight. They both lock into place from the same detent, which has a longer than standard detent nipple. Quote Link to comment Share on other sites More sharing options...
unforgiven Posted December 1, 2012 Report Share Posted December 1, 2012 Thanks bro. :) Quote Link to comment Share on other sites More sharing options...
planeflyer21 Posted December 1, 2012 Report Share Posted December 1, 2012 Cool!Glad to see they offer three colors with each sight. My eyes don't take to the red or amber too well.Jon Quote Link to comment Share on other sites More sharing options...
98Z5V Posted December 4, 2012 Report Share Posted December 4, 2012 2. Above said detent does not fit in a Magpul MBUS, which uses a special polymer detent.That's the Gen 2. I'd bet it would fit the Gen 1 fronts just fine, brother. Roll pin used to secure the sight post, once sighted in. Quote Link to comment Share on other sites More sharing options...
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