Apologies in advance to the gunsmiths in this forum that actually know what the hell they're doing.
I've never been exceptionally pleased with the SCAR 17 trigger. Today, after thinking about a past post by Sarge, I decided to to take my trigger group apart and polish it up a bit. I don't even know what any of the important parts are named, but I did determine which two pieces rub together (the sear and something else) before the trigger actually breaks and rifle goes boom.
I took these two pieces and looked at the existing wear marks. Between the very fine dirt , factory paint and tiny tooling imperfections I could see why the trigger might not be up to snuff. I took a VERY fine (not labeled but probably about 320 grit), sponge type of sanding block that I found in my wife's paint project box and gently polished the areas of the existing wear marks. It was delicate work as I didn't want to do anything to screw up the actual geometry of the mechanism. I did clamp a mag light in vise and pointed it right at the work area so I could readily see how a few swipes of the sanding block was impacting the workpiece.
About 20 scrubs (5 inspect, 5 inspect, etc.) into it (and occasional clean up with a CLP dipped Qtip), the paint was mostly off and the metal was starting to get real shiny. I gauged this as the "stop what your doing or you might really eff this up" point and reassembled the trigger group with good bit of CLP. Hardest part was the first bit of assembly with the: actual trigger, the piece that rides in the middle groove of the trigger, the spring that keeps the two aforementioned pieces apart, and finally the actual trigger return spring. Even with my sausage fingers jammed down in there, it wasn't exceptionally difficult. The rest of the stuff just sort of intuitively drops, slides and gets pinned back in place.
Trigger pull action before this project: scrape.....scrape......scrape......good bit of interference.....BOOM!
Trigger pull action after this project: smooth slide.....lesser bit of interference............BOOM.
Much lighter trigger pull now in my opinion.
My only advice if you decide to go down this path: DON'T OVERDO the POLISH EFFORT. I didn't polish very much at all, and this small effort had a large, positive effect on trigger behavior. I don't know how much you could actually change the geometry before it might be considered effed up, but I apparently didn't reach it. Something tells me that if I'd have Dremeled or used a more vigorous polishing effort the project might have turned out badly.
That's all I know for now! Very pleased with the results.
T.Bane
I've never been exceptionally pleased with the SCAR 17 trigger. Today, after thinking about a past post by Sarge, I decided to to take my trigger group apart and polish it up a bit. I don't even know what any of the important parts are named, but I did determine which two pieces rub together (the sear and something else) before the trigger actually breaks and rifle goes boom.
I took these two pieces and looked at the existing wear marks. Between the very fine dirt , factory paint and tiny tooling imperfections I could see why the trigger might not be up to snuff. I took a VERY fine (not labeled but probably about 320 grit), sponge type of sanding block that I found in my wife's paint project box and gently polished the areas of the existing wear marks. It was delicate work as I didn't want to do anything to screw up the actual geometry of the mechanism. I did clamp a mag light in vise and pointed it right at the work area so I could readily see how a few swipes of the sanding block was impacting the workpiece.
About 20 scrubs (5 inspect, 5 inspect, etc.) into it (and occasional clean up with a CLP dipped Qtip), the paint was mostly off and the metal was starting to get real shiny. I gauged this as the "stop what your doing or you might really eff this up" point and reassembled the trigger group with good bit of CLP. Hardest part was the first bit of assembly with the: actual trigger, the piece that rides in the middle groove of the trigger, the spring that keeps the two aforementioned pieces apart, and finally the actual trigger return spring. Even with my sausage fingers jammed down in there, it wasn't exceptionally difficult. The rest of the stuff just sort of intuitively drops, slides and gets pinned back in place.
Trigger pull action before this project: scrape.....scrape......scrape......good bit of interference.....BOOM!
Trigger pull action after this project: smooth slide.....lesser bit of interference............BOOM.
Much lighter trigger pull now in my opinion.
My only advice if you decide to go down this path: DON'T OVERDO the POLISH EFFORT. I didn't polish very much at all, and this small effort had a large, positive effect on trigger behavior. I don't know how much you could actually change the geometry before it might be considered effed up, but I apparently didn't reach it. Something tells me that if I'd have Dremeled or used a more vigorous polishing effort the project might have turned out badly.
That's all I know for now! Very pleased with the results.
T.Bane
