M4 Flat Top Anodized Upper Receiver - BLEM - Stripped
***Limited Blemished Batch * 100% Functional***
This upper receiver features a mil-std 1913 rail for mounting optics and accessories and has M4 feed ramps.
- Anodized
- M4 Feed ramps
These uppers are Cosmetically Blemished. The metal under the anodizing has surface imperfections rendering these cosmetically blemished.
Add a RTB M-LOK Handguard?
![](https://cdn11.bigcommerce.com/s-cmxe8vp0pm/product_images/uploaded_images/hgrtb.jpg?t=1645477621&_gl=1*1abbrll*_ga*NzQ4NDkyMTQ2LjE2MzA0MTI2NDk.*_ga_WS2VZYPC6G*MTY0NTQ3NjQ4OS41NTcuMS4xNjQ1NDc3NjI5LjM1)
Add a plain or engraved port door + forward assist kit from the drop-down menu.
Choose one of our upper engraving graphics from the drop-down menu.
See reference "CHART A" and "CHART B" tabs above.
![](https://cdn11.bigcommerce.com/s-cmxe8vp0pm/content/assets/images/Port%20Door%20Sample-C.jpg)
![](https://cdn11.bigcommerce.com/s-cmxe8vp0pm/content/assets/images/Open-1.jpg)
![](https://cdn11.bigcommerce.com/s-cmxe8vp0pm/content/assets/images/UENG-M4-SAMPLE.jpg)