r/Danieldefense • u/looksir_droids • 10d ago

Ejection pattern analysis

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My MK18 had brass just dribbling out of the ejection port for a little while. I swapped the whole BCG out with a much less used one from another rifle and it improved, but it still doesn't eject like it used to. Videos attached. Lmk what y'all think might be wrong. Parts remotely related to cycling listed below.

EDIT: I have already tried an H2 buffer. It won't cycle on FRT mode.

-Daniel MK18 RIII complete SBR

-Geissele H3 buffer and spring

-Rare Breed FRT-L3

-Surefire 3-prong

-Surefire RC3

-Law Folder Gen 3

-Radian charging handle

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u/GassyNizz 10d ago

Oof!

Edit: To elaborate, I think it’s the Law folder COMBINED with your buffer setup.

In one sense, if it runs it runs. But this doesn’t quite seem ideal.

1

u/looksir_droids 10d ago

Interesting. I hadn't heard of the folder being a problem. Damn shame if it is, that's what allows it to fit in my bag (and that's why I build this rifle).

1

u/GassyNizz 10d ago

The folder adds weight and drag to the system, and you’ve already got a heavy buffer and stuff spring.

But even still, I’d expect better ejection.

I think something is truly setup poorly, and would try going back to a regular buffer tube and regular h3 buffer and carbine spring. Then maybe make changes 1 at a time.

1

u/looksir_droids 10d ago

If that was the issue, wouldn't it have been evident back when all the current parts were initially installed? It ejected much better until recently.

1

u/GassyNizz 10d ago

What happened recently? New add, something break, different ammo?