guy has one at my club but i am not quite schooled enough to give him all the details.

colt ar-15 a2 sporterII
serial prefix sp
bayo lug,flash hider,no reinforcement around mag release.

what model number is this.

Check this site out, [url]http://www.biggerhammer.net/ar15/[/url]

Should help you with determining variants.

Mike

so it is simply a colt sp2,correct?

Under variants at link, it lists certain "features".

As you listed "some" but not "all" of the features of the rifle, I linked the site so you can determine for yourself which model number best fits the rifle your asking about.

I'd say your guess is wrong, but not being able to see the twist rate, type of rear sight and other pertinent items, why should I guess, when the chart will let ya know exactly. All that is required, is to consult the Variant Chart.

Print it out, take it with ya, set down, read it and compare chart to features on rifle, sorry but I ain't one of those Miss Cleo types, this is the best I can do, for ya.

Mike