I see a lot of do it your selfers out there and I think that it is great that you should be maintaining your firearms.But if you are not sure about taking you firearm apart pass the fieldstrip stage for cleaning, you need to seek out the help of someone who is certified to work on that gun by the manufacturer or gunsmith who is knowledgeable with your particular firearm. A mistake in replacing a part or reassembly can and is VERY DANGEROUS
GUNFIXER199