JD Machine Calguns Lower

[emsp]

So I procured a JD machine Calguns lower and looking at getting a parts kit. I do not know whether or not it is a large or small pin lower? Since this is my first build I really do not want to screw it up could someone fill me in on the difference is?

[0351USMC]

JD machine use small pins,,,,large pins are for some old Colt Lower Receiver

[heycorey]

JD machine use small pins,,,,large pins are for some old Colt Lower Receiver

+1 ... unless you have an old (mid-90's) Colt Sporter (upper or lower), you don't need to worry about it.

[emsp]

Sweet thanks guys, got my parts ordered!