Product Description
The Phase 5 Weapon Systems A3 Flat Top Complete AR-15 Upper Receiver is a solid building block for your next AR.
- Flat top upper receiver, complete.
- Mil-spec type III hard coat anodizing
- Precision machined to M16/M4 specs
- M4 feedramps
- Includes: Forward assist assembly, ejection port cover assembly.
Made in USA
