Well mine works fine when it is on the gun.
Usually around the third round it comes off.
Well after spending $360 for the M6, just setting it on a shelf and spending another $430 on a surefire really pains me.
The Surefire was not available when I purchased the M6.
I have had it for years so just returning it is not an option any more. I had it and as long as I shot lighter re-loads (which I had about 500 rounds of) it works perfectly. When these ran out, I purchased hotter factory rounds and went to the range and after 3 shots WTF? My light was gone.
It was broken down in front of the position on the concrete.
I called Steamlight to get parts and was told they sold that line to insight. I called them and they felt the spring may have weakened with age and sent the stuff free. I shot it again checking after each shot and found it loose again.
It is my home defense gun hence the laser / light. But if it were to come off when really needed that would be bad to say the least.
I have mounted it on my SKS and shot it and it never came off.
hotter factory loads are a big question. Will it come off this round?
The Surefires metal construction sure looks stronger than the plastic of the M6.
Any gun smiths out there with suggestions?
Would deepening the notch or reshaping it with a file help?