MFS 223 in Core15

[EddieT]

I took my 16" Core15 to the range today to test it out with MFS 223 every round was either failure to eject/cycle Fires find but only some rounds eject but seems to only cycle part way failing to chamber a new round or the round doesn't even eject.

I've change out the front sight with a low profile gas block could this be the problem? or is the buffer/spring to heavy? could my gas block be misaligned?

 

[sTraTz]

Sounds a bit strange, but thanks for the info. I will stay away from MFS in my core15

 

[mildot]

Who changed out the front sight/ gas block?
Sounds like it's not getting enough gas???

MFS is dirty, you should have got the piston??, not that a piston is any better. I don't want to feel the wrath of the DI gods.

 

[enefgee]

Have you tried any other ammo - I've heard of similar problems with MFS 223 in the past (lots). Run some Fed Black Box, or Fiocchi, see if it does the same thing.

 

[Power Pill]

Probably misaligned gas block

 

[andrew3081]

i assume you have the DI CORE15 model?
I have the basic DI CORE 15 model and i shot MFS rounds before...no problem at all.
It could be the gas block.

 

[Ar180shooter]

I took my 16" Core15 to the range today to test it out with MFS 223 every round was either failure to eject/cycle Fires find but only some rounds eject but seems to only cycle part way failing to chamber a new round or the round doesn't even eject.

I've change out the front sight with a low profile gas block could this be the problem? or is the buffer/spring to heavy? could my gas block be misaligned?

Have you tried different ammo? Sounds like it's an issue with your rifle, not the ammo.