I have all Bushmaster lowers but have built uppers for RRA,Ameetec,Colt,DPMS lowered rifles.The uppers fit great and yes theres always a slight bit of play but thats normal for mil-spec and does not affect accuracy besides you want a little play makes field stripping easy.Great price for a high quality upper that can take being used hard.Function and reliability over fit and finish everyday...I buy from bravo because when they say professional grade weaponry they mean it and you get the quality and durability that comes with it.I have used 4 of these uppers for rebuilds to my pre ban rifles and I recomend these to anyone who wants Colt military quality without the Colt price.BCM knows what they are doing..great CS great company.
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0 of 0 people found the following review helpful:
Excellent for the money
May 10, 2011
Reviewer:
Wayland Young
from Pinson, AL United States
The receiver has a flawless finish and machining. It's very dark mil spec phosphate unlike in the picture where it's oiled down. Matched perfectly to my Daniel Defense lower. Has a tiny amount of play but well within spec. Would buy again any day for the price.
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2 of 2 people found the following review helpful:
Great Upper
March 4, 2011
Reviewer:
JB
from Eastern, NC United States
I bought this upper for a 16" .936 build with a DPMS lower and barrel. I was completely satisfied and the forging mark "Keyhole" cerro forge is also the same forger that made all my rock river uppers receivers. It worked great with the DPMS A-15 lower with a little bit of play but the accuwedge after being trimmed down took care of it. It was perfectly machined and is stamped M4 on the barrel end of the receiver. This upper also saved me $20 bucks from the $120 YHM upper receiver I was going to purchase. Glad I made the switch and didn't compromise on quality. I will definately be using these again. You won't be dissappointed! Shipping took 4 days. Great Job Bravo Company once again! Don't forget the gunfighter charging handle its a must have!
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1 of 1 people found the following review helpful:
Fits My Bushmaster...
January 28, 2011
Reviewer:
Anonymous Person
from mount airy, MD United States
This is an excellent, well-machined product. After purchasing a factory model Bushmaster 6.8 SPC, I decided to "roll-my-own" to see if I could save some money. I purchased my lower parts and stock from Bushmaster and realized I would spend more $$$ buying from them than buying the rifle out-right. Enter Bravo Co.... my biggest fear was having a mismatched lower-upper receiver. Well I rec'd this upper today and it fit perfectly onto my Bushmaster lower...! If you are thinking of matching this upper to a Bushmaster lower, then have no fear. It will be money well spent. At the same time, I also bought the bolt group and charging handle with similar excellent results.
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2 of 2 people found the following review helpful:
Excellent
January 25, 2011
Reviewer:
Anonymous Person
from san antonio, TX United States
BCM M4 ramped upper flat top 
Excellent for the money 