Colt AR-15 Question.

[Chvyblzr1972]

I am getting a Colt AR-15A2 and was thinking about getting another upper for it, since it has the handle and I want a flat top.

I was told by a Person in a gunshop that the colts mating pins(the ones that hold the upper and lower together) are of a little different size then those of other AR makers. Is this the case??

If so, what should I look for when it comes to getting an upper?

[CJ]

I am getting a Colt AR-15A2 and was thinking about getting another upper for it, since it has the handle and I want a flat top.

I was told by a Person in a gunshop that the colts mating pins(the ones that hold the upper and lower together) are of a little different size then those of other AR makers. Is this the case??

If so, what should I look for when it comes to getting an upper?

Only on very early models

[David]

Depends on when it was made. If it's a govt model it will be small hole. Civilian sold AR15a2 marked Colt guns will probably be large hole.
To run other/newer uppers you can buy adapter pins that screw in. You can also have a gun smith permanently sleeve it to only receive small pin uppers.

[Chvyblzr1972]

Ok, Thanks. If memory serves me correctly it was purchased originally in the late 80's early 90's. So when I get it I will take it somewhere to have them look at it.

[YALE]

Dude, if you don't want to mess with it, I might buy it. I'm going for one of each, and I an A2.