which four digit model number is EXACTLY a semi-only M16A2?

www.biggerhammer.net/ar15/variants/

Quoted: which four digit model number is EXACTLY a semi-only M16A2?

The closest you will get is a 6551

I would say it is the 6550 as it is roll marked AR-15A2 and it has a bayo lug which the 6551 doesnt; however, you will have to find a used one since Colt won't make them like this anymore

replies are correct

If I were to build a M16A2 in semi, I would do it with a Colt LE lower (6721, 6920, or the AR15 A2 Rollmarked lower model?)

and get a genuine 20" Colt upper from Armament International

and they have them NIB for about $775

I want it to train with on my own time after I get back from AIT. I'll have about $10,000 bucks after I take the taxes out of my NPSEB and the E3 pay I wont spend very much of. I'm putting half of that in the Bank, leaving $5,000. And since this is one of only a couple things (the others add up to about $2000) I'm going to spend that on I have a considerable budget for this. Therefore, I dont mind dropping a little extra for a used "collectable". It has been suggested to me to just buy a Bushmaster, etc. But I did some rough things (ie. uncoordinated, stupid shit only a dumb cadet would do) to the Colt I carried at FTX drill in March. It survived, functioned flawlessly, and after a could cleaning could have passed for NIB. That experience gave me a certain fondness for the Colt.

Of course, with my luck, I'll buy a setup just like we have right now, and then a month or two later I'll go to drill and it will be announced "Guess what, The regiment is getting M4s!"

Quoted: I would say it is the 6550 as it is roll marked AR-15A2 and it has a bayo lug which the 6551 doesnt; however, you will have to find a used one since Colt won't make them like this anymore www.chameleonweaponry.com/dr-arf/RM_COLT_223_AR15A2_GOVT_MODEL_REVISE_1.jpg

A 6551 has the correct lower.