CMMG 9mm AR-15 Upper Receiver

Manufactured by CMMG
SKU: 55BA222
MPN: 55BA222
Manufactured by CMMG
3 Reviews

In Stock

Standard orders will ship out the same business day if ordered by 3:30 pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.



CMMG 9mm AR-15 Upper Receiver For 9mm. Includes shell deflector, ejection port door and forward assist.
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AssemblyAssembled Uppers
Feed RampsUnramped
FinishHardcoat Anodized
Forward AssistAssembled with Forward Assist
Port DoorAssembled with Port Cover
Receiver Material7075-T6 Aluminum
T MarksT-Marked

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

3 reviews


Had to Fit

by -

Price was right and shipping was fast as always. Upon receiving the receiver I first notices that the dust cover pin was bowed. I removed it and found out that the case deflector pin holes didn't line up with the receiver. after some filing and sanding on both top and bottom of the deflector things lined up. Don't know how the assembler couldn’t have seen that it was a problem. I'm sure there was some difficulty getting it assembled.

Not as pictured update


This thing looks like a BLEM upper there are scratches and faded part and wrinkles on the finish around the curves
<br>From PA: We checked a couple here and they were fine. Give us a holler so we can get you fixed up.



Question, and I’m sorry if this isn’t the right place to be asking a question. However, couldn’t you just use a normal AR upper ??