Badger Ordnance "SpeedBlock"

If the red locktite is failing I would try it in combination with a lock washer.
Make sure the threads (both the male and female) are clean so the locktite can cure properly. Last resort, you can try peening, or staking it in, but this would be a ##### to remove at a later date (I personally would stay away from this option).
 
You could try milling/filing a flat on the barrel where the screw engages. This would ensure that the majority of the screw face was bearing against the barrel surface, as opposed to just the middle of the screw on a round surface.

Red loctite is definately the way to go.
 
Leg said:
You could try milling/filing a flat on the barrel where the screw engages. This would ensure that the majority of the screw face was bearing against the barrel surface, as opposed to just the middle of the screw on a round surface.
Click to expand...

I did that before the inital installation. It backed out. Moved up to blue loctite, it backed out. Its now got red 262 applied. Hopfully it'll hold.....
 
Yeah locktight is only good up to a certain temp though. Blue works best for vibration. I bet the block gets pretty hot and softens or melts the locktight. Have you tried both red and blue? There is also locktight super glue, I forget the code..but its industrial strength and works well.
 
272 is supposed to be good up to 450F. I don't know if it's chemical resistant like the 262 is? How hot can the barrel / block get? I've never had any sustained stings of fire and my barrel never too hot to touch...

I'm starting to re-think this whole SBR tacticool black rifle thing. I'm starting to wish I still had my Colt 6600 :( .
 
You're going to get a barrel way hotter than 450 degrees C on full auto with un-neutered mags. I can see why a military would want to pin them. For us poor civies in Canada, I think the locktite can (and does -at least on mine) work.
 
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