M4 magazine tube cap

[Plinkingaway]

Just wondering, is it possible to do the magazine cap up too tight?

[John Doe]

I just crank mine down as tight as I can by hand. I think hand tight is good enough personally, I have not had issues. Maybe if you tighten it with a pair of channel locks might cause some damage, but I would not suggest you use any tools to tighten the cap. Hope that kinda answers your question. Do you have any damage to your cap? 

[xblax619]

i agree with john doe. hand tight is plenty good enough. remember this weapon was designed, more or less, to be field stripped by marines in the field. 

[Plinkingaway]

20 hours ago, John Doe said:

I just crank mine down as tight as I can by hand. I think hand tight is good enough personally, I have not had issues. Maybe if you tighten it with a pair of channel locks might cause some damage, but I would not suggest you use any tools to tighten the cap. Hope that kinda answers your question. Do you have any damage to your cap? 

No damage. I just wondered, because I didn’t want to damage the barrel retaining ring. 

[John Doe]

18 minutes ago, Plinkingaway said:

No damage. I just wondered, because I didn’t want to damage the barrel retaining ring. 

ok, good. Yeah just hand tight as tight as you can and it will be fine.