I have a 10+ year old complete upper. Now I want a lower. Recently I've read that there are different pin sizes that might prevent a good mating between upper and lower. can someone give me some information on this please?
Posted: 4/23/2009 3:24:02 PM EDT
[#1]
I think you wanted to be in the AR Forum
Mil spec pin size .250
Colt large pin size .315
Correct me if I'm wrong
Most of your MFGs. Bushmaster/DPMS etc. make conversion pins to mate any of the combinations.
I think you were talking about AR 15s right?
Posted: 4/23/2009 5:01:13 PM EDT
[#2]
Welcome to the site!
I'm going to move this to the AR Forum as the AK Forum isn't the best place for this.
Posted: 4/23/2009 5:07:29 PM EDT
[#3]
If you buy a lower today, it will have 0.250" holes for the takedown and pivot pins.
Your upper will work, even if you have an oddball Colt upper with a 0.315" pivot pin hole. You would need an offset sleeve for the front lug of your upper.
Posted: 4/23/2009 6:30:17 PM EDT
[#4]
Thanks guys. Useful information. Seems like I probably won't have a problem.
