Convoy C8+ Red Filter

Red Filter with silicone for the Convoy C8+
 
The glass isn't heat treated so you're limited to short bursts of roughly 2 minutes. My testing of 3 minutes reached 80°C and it was creaking as if it was at its limit. I'd recommend a red LED torch for continuous searching.
 
Using the Convoy C8+ PM1 I could see out to 150m, so it's a good accessory to have on hand.
 
Note: I won't replace a filter if it cracks from high temps.