Seems like I read somewhere that these guns have 7075 aluminum receivers on them
My NOE pellet mold is out for delivery right now, I think that I'll wait til it gets here before I head for the state land today. My gun (Standard Challenger 35 cal) is supposed to be here on Monday from southern Florida from what I understand. I ordered it from https://www.aeaairgunus.com/
Neil C can make a reflex moderator that will do a great job in taking the bark out of yall's Challengers. The moderator in my profile pic is one of his, it does a great job at well over 350fpe. I have a couple of these from Neil as well as DonnyFL Ronin's, Emperors, and extensions. For its size and weight, Neil's units out perform the units from DonnyFl. Now add the 6" extension to an Emperor and it is indeed effective. However it is LONG AND HEAVY......
My replacement sear arrived today from Bin so now I have a spare