No ratings yet
Be the first to review this product
Upgrade the performance of your AR15 build with this Aero Precision AR-15 M4E1-T Upper Receiver Assembly. The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. The proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.
Sponsored
Cash for Arms
Instant offer on any firearm
No negotiating, no strangers at your door. Ship it and get paid.
Get an OfferHave one to sell?
No Price History Available
Check back later for pricing trends
Sign in to save a target price and receive an email when this component drops.
Sign In to Set AlertThis is a bundled product that includes multiple components. The exact contents may vary - check the product description for more details.
• Complete assembly ready to use
• Multiple components included
• Value package pricing
Guide
A comprehensive overview of every major component in an AR-15 build—including what's inside bolt carrier groups and parts kits—organized by assembly for new builders.
12 min read
Guide
A neutral guide to component strategies for left-handed shooters, left-eye dominant right-handed shooters, and those managing eye/hand dominance mismatches. Covers ambi uppers, charging handles, gas system tuning, and real-world tradeoffs.
6 min read