I still need to call KAC and ask about buying spare parts.
Wes @ MSTN will sell the E3 complete bolt (it uses a standard BCG). The price is 350 bucks. That said after 10,000 rounds down my SR-15 E3 IWS it’s never had an issue. Just saying.
im pretty fast with mine. some would say its too much rifle for me.
i then tell them to shut up. they see me shootin, they hatin.
Titleist have you gone 10k on the original extractor? The extractor is claimed and I am sure no doubt to be “improved”. But is it function+durability? Or just function? I have not found a thread or an article that talks of extractor life and durability.
In case anyone hasn’t seen it, some pics of the KAC extractor compared to a regular one.
and just for fun, the bolt & barrel extension
I love those pictures. 
Extractor should do 20k no problem (and springs).
We do sell spare bolt parts now, however we put a lot of rounds thru these (and the SR-16’s) and several others (Chris Costa, Travis Haley etc) have TONS of round thru them, and we are pretty sure 
of the 20k life span.
its a great setup. 
Correct, original extractor, it hasn’t skipped a beat.
He may have been confused by your Chamillionaire quote 
I cannot wait to complete my AR build with a KAC SR15 upper I have coming my way. Anybody have any experience with Knesek Guns? So far I’ve waited over a month for my upper…
I’ve been to their website, looks like they have lots of really cool stuff. Good luck hopefully you’ll get it off the ground soon.
I’ve been waiting over a month for a fully paid for order that is available at the manufacturer, and they continually lie to me about how it’s not available.
I’ll never deal with Knesek again.
And back on topic: I just picked up an SR-16, but haven’t had a chance to shoot it yet. Love the ambi mag safety (I’m a southpaw), even beats the KAC ambi safety I put on one of my other rifles. Very light as well.
Thanks for answering my question KevinB. I think you’ve sold another SR-15.
there’s no better option for ar-15’s than the SR-15 E3 imo.
I own a Noveske, LMT, LWRC, and KAC SR15. The KAC is hands down my favorite!
We just sold one a few days ago. Very nice rifle!
Best out-of-the-box general purpose AR money can buy, it has no equal.
my E3 and my Noveske Afghan are my two favorite rifles by far
the knights is a real peice of quality