GunStuff Posted February 12 Share Posted February 12 Hey everyone, new here but a long time lurker. I bought myself an M4 a while back and I’m getting around to making it the way it is supposed to be. Have a new magazine tube from SOCOMguy coming in on Monday, and replaced my polymer trigger housing with an A&S trigger guard. Other than the dang safety detent spring and the c clip fighting me (due to me not using my snap ring pliers and following some ham-fisted advice I found on youtube and not StrangerDangers straight forward trigger housing guide), it all fit together without much cussing and seems to be functioning the way it’s supposed to. The sears are catching the hammer during the cocking and reset phase with plenty of overlap when connected, the trigger pulls with no noticeable difference, the safety is as tough to activate as it was in the original trigger housing. I have one question on the trigger housing though. The hammer seems to fall forward quite a good ways. In my excitement to change out the housing, I didn’t pay attention to how far forward the hammer can go. The picture below shows what I’m talking about. Is this an issue or normal? And I have a couple questions on the removal of the magazine tube. I did the heat gun method, took me about 20 minutes total with stopping every couple of minutes when smoke started to rise and testing the magazine to see if it would budge. I spent probably 10 minutes or less with heat application in total. My heat gun is an ancient one and is rated for supposedly 700 degrees (one setting). My mom used it 20 years ago to remove old paint and wall paper and it hadn't been used since. I put the heat in the opening for the barrel unit, directing the heat down to where the threads are: There doesn’t appear to be any discoloration to the finish I oiled the receiver afterwards. And here is the amount of red Loctite that was on the threads: The receiver got fairly hot during the heating process and you wouldn’t want to touch it with your bare hands. I removed all the plastic parts; all that was left was the rear sight and slide release. I probably should have removed both in hindsight. My questions are with that heat level in the receiver, do I have anything to worry about with the strength of the aluminum being compromised? And will I have any issues with the sight and the slide release? The slide release spring seems to be fine and just as tough to use as before I did this work. These are probably needless worries, but this is my first time truly doing “gunsmithing” level of work and I guess I’d like to alleviate any worries. 1 Quote Link to comment Share on other sites More sharing options...
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