UPPER SPECS:
-Machined from 7075 billet with Type III hardcoat annodized finish.
-M4 feedramps.
-Beefy design which is stiffer allowing less flex.
-Front of receiver is machined to accept most after market rail systems
-Comes with the forward assist and ejection port door installed (Not shown).
-Forward assist is retained with thread pin (included).
-Flared side walls to eliminate accidental bolt release....
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