Thanks, for $19 shipped and our backing on warranty and service, it's one of the easiest upgrade to make if you have a Matech BUIS
But for as long as the factory unit works, by all means you should keep it. If the bracket breaks or the screw snaps, you know how to find us
Roger Wang
Forward Controls Design
Simplicity is the sign of truth
The factory screw we tested to destruction snapped at 30"/LB, the screw we selected, a Grade 8 plus, broke between 45 and 52"/LB
Left to us, we would have used a beefier screw still, but we can't do that without modifying the sight itself, so this is the next best thing, actually the only thing we can do given the design constraints.
Roger Wang
Forward Controls Design
Simplicity is the sign of truth
Like the BAD-BSM Matech upgrade! This I have to try!
Something to keep in mind..If re/installing a Matech ibus with dried thread locker already on the screw.. make sure that you 'finger tighten' down the mounting screw as far as possible until your finger tips bleed! This will make sure that the threads are not cross threaded before applying torque with the hex wrench
What a surprise to see this thread resurrected
Though it's only been a few years, I remember this pet project fondly. I got my Matech sight when it was still rare, I think back in 2003, and I promptly snapped the factory bolt in two.
It was my fault for not reading the manual, I was used to the heavy duty bolts on Troy, ARMS and KAC BUIS, and expected the bolt would stop turning at some point, but it kept going until it broke.
I went to the hardware store and got replacement bolts, and proceeded to snap another one before I realized the bolt wasn't going to bottom out as it would on other brands.
The oversized Allen head, and thin bolt body tend to exacerbate this, as a big Allen head necessitates the use of a large wrench, which in turn tends to make the user apply more torque he would, had the wrench been smaller, and the small diameter bolt doesn't help anyone.
We can't make the bolt thicker, but we do use a Grade 8 bolt so it's stronger, and the head is smaller than the factory one as well. While we were at it, we redesigned the bracket, though few users broke the bracket, to make it accommodate the new Grade 8 bolt, and less prone to canting on some rails.
The RKM (retrofit kit, Matech) was Battle Arms Dev's first foray into the AR/M6 market, so it carries some sentimental value for me
Roger Wang
Forward Controls Design
Simplicity is the sign of truth
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