[ARCHIVED THREAD] - bushmaster upper?

Posted: 10/26/2004 7:23:40 PM EDT

A local guy has an upper for sale. How can I tell if it is a bushmaster? Not that I don't trust the gentleman but....

Posted: 10/26/2004 7:33:24 PM EDT

[#1]

my bushy uppers near the rear sight are marked FK,DK and one has a keyhole mark.See if the barrel is marked BMP 1/9 NATO wich dosent mean the upper is Bushmaster but very well could be oh and see if the inside of the upper is grey.That would indicate a baked on dry film lube that Bushy,Colt and a few other quality upper builders use as that is the mil-spec for an upper.

Posted: 10/26/2004 7:37:45 PM EDT

[#2]

yup, the barrel would be the biggest indicator, look for chrome lining in the bolt carrier also, this would be a sign of a bushy upper, if it comes with the b/c and handle

Posted: 10/26/2004 7:40:40 PM EDT

[#3]

Do they not actually stamp bushmaster on them somewhere?

Posted: 10/26/2004 7:43:56 PM EDT

[#4]

I failed to mention it is a flat top.

Posted: 10/26/2004 7:45:35 PM EDT

[#5]

Quoted:
Do they not actually stamp bushmaster on them somewhere?

Posted: 10/26/2004 7:47:08 PM EDT

[#6]

On a flat top the forge mark might be there like the key hole,whats the inside look like black or grey?

Posted: 10/26/2004 8:05:09 PM EDT

[#7]

Make sure that it is a proper upper first, thread relief behind barrel threads, proper chamfer on muzzle end, proper elongated takedown pin hole, chamfers on takedown pin hole lug, auto sear relief, etc.

Posted: 10/26/2004 8:22:23 PM EDT

[#8]

I would say the inside is more grey. It does appear to be Chrome lined. Tweak your going to have to dumb it down a little for me. I am a Noob.

Posted: 10/26/2004 8:32:46 PM EDT

[#9]

He means there should be a releif cut on the bottom of the upper areound the rear take down pin lug.Thread releif is the unthreaded prtion of the upper behind the threads,Chamfers are the lateral looking cuts on the lug.If its more grey then that should be the baked on dry film..if its a Bushy marked barrel chances are it is..is the bottom of the carrier cut so the top of the firing pin is exposed?

Posted: 10/26/2004 8:44:28 PM EDT

[#10]

yes it is.

Posted: 10/26/2004 8:47:00 PM EDT

[#11]

Sounds like a Bushy upper,whats the barrel say and what legnth?Ban or no ban?Oh see if on the left side of the front sight base the part that the roll pin for the gas tube is in is there a crown stamping or mark?

Posted: 10/26/2004 8:51:22 PM EDT

[#12]

14.5....B MP 5.56 NATO 1/9 H BAR, and yes there is a crown stamp on the fsb.

Posted: 10/26/2004 8:58:30 PM EDT

[#13]

Definately a Bushmaster barrel with all that.I have the exact same barrels with phantom I would say 99% Bushmaster sounds like all quality parts..the only things I changed on mine were RRA closed bottom carriers although my Bushmaster carbon #4 came with one...Definately Bushmaster.If you need a phantom on it you can send it back to them and they will only charge you for the part because its their assembly all you pay is the part and shipping each way wich is about $65 total.LKabor is free ,how much is he telling you?if you could get it for $400 that would be a great price as new its about $150 more.

Posted: 10/26/2004 9:03:19 PM EDT

[#14]

Sounds great...Thanks so much for your help!! It has an AK brake to make it legal. I don't really like the brake but I will prob buy it. Is $350 a deal with b/c/ch?

Posted: 10/26/2004 9:10:12 PM EDT

[#15]

Thats a good deal...I think bushmaster could take that off and put a phantom if you wanted.

Posted: 10/26/2004 10:00:57 PM EDT

[#16]

Elongated takedown pin hole, arrow points to auto sear clearance cut