What shell extractorr to get1q
 

Have a remi SA 300, what type of BROKEN shell extractor should I get....I am a little confused...223 base, but 30cal neck?!?!? Sorry about the confusion...hadn't slept in 24hrs

Not sure on exactly what you have or what you are asking about.

I am assuming that are talking about an extractor on the bolt (semi auto or bold action). As far as I am aware only certain parts fit on certain guns. You could not get a .30 cal extractor to fit a .223 bolt in an AR-15 nor the other way around.

The extractor functions based on head size not neck size.