Blue Gunk

[ThatGuy]

Just bought a S&W M&P. It has blue plastic looking crap on one end of the return spring. What the heck is it and how do I take it off? Anybody else seen this stuff?

 

[rick357]

Just bought a S&W M&P. It has blue plastic looking crap on one end of the return spring. What the heck is it and how do I take it off? Anybody else seen this stuff?

I always assumed it was something that helped with the slick operation of the pistol and let it be. A few thousand rounds later and it is still there without any sign of damaging anything and the pistol works even better than new.

Rick.

 

[ian_in_vic]

I think it's so that non-gun people (police persons) don't put the spring-guide assembly in backwards. Same reason for the yellow on the sear release lever, otherwise it might require a brain to strip and re-assemble, can't have that.

 

[toxic]

Always thought it looked a little goofy too but it's still there after 750ish rounds...

 

[daBear]

As was mentioned above, its to help orient the recoil spring the proper way. Why remove it when nobody is gonna see it and it may help save u grief in future if assembled incorrectly?
Cheers
dB

 

[ThatGuy]

Thanks alot guys. Just put 250rds through it yesterday for the first time and it worked great. Blue stuff hasn't moved a bit.

Cheers

 

[leadfoot]

No one see's it ....so who cares. I have well over 7000 rounds through my 40 cal and the blue is still there......