Colt Retro XM177E2 Defective?

[45C]

Some pic's of the interior of my Colt Retro Xm177E2 upper receiver. I purchased the rifle new several months ago. It was properly cleaned up and lubricated before firing. Does this look like normal wear?IMG_7449.jpgIMG_7448.jpgIMG_7176.jpgIMG_7177.jpg

[Uni-Vibe]

I'm doubtful. I have a 20 year old Bushmaster A2 clone that's seen a lot of rounds. It has nothing like the wear your photos show. How does the bolt carrier move in the upper?

[45C]

Bolt carrier moves fine, about the same as my other Colts. Here are a few more pic's:IMG_7592.jpgIMG_7593.jpgIMG_7594.jpg

[Blanksguy]

You need to post some clear/close photos of the top-front of the Bolt-Carrier......and of the Bolt-Assembly (with bolt in the "un-locked" position for us to view.
The "wear" is abnormal...….with what looks like either "chatter-marks", or something sharp sticking up and/or off of the upper-side of the assembly causing the abnormal wear.

Regards, RichardS
US Army, RET

[45C]

Here are some, let me know if you need different views? IMG_1440.jpgIMG_1439.jpgIMG_1428.jpgIMG_1427.jpgIMG_1441.jpg

[halfmoonclip]

Is there actual damage to the aluminum, or is it simply the surface finish? Presuming you had the proverbial 'light coat of oil' on the carrier?
Moon