BUY ATI AR-15 UPPER ASSEMBLY 5.56 AERO M4E1 UPPER WITH 9″ FREE FLOAT HEADDOWN KEYMOD RAIL – NO BCG OR CH
- Bolt carrier group or charging handle not included
- Aero Precision M4E1 upper receiver
- Nitride treated 4150 16” 1:7 M4 profile barrel
- 9” Headdown Keymod free float rail
- Nitride treated steel low profile gas block
- Nitride treated A2 flash hider
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