Daniel Defense Big Hole Flat Top Upper Receiver w/Feed Ramps 04-012-09001
All Daniel Defense upper receivers
Click to see full view
Daniel Defense
Overview
The Daniel Defense Big Hole Flat Top Upper Receiver is a complete assembly designed specifically for the AR-15 platform. Its flat top design allows for easy mounting of optics and accessories, while the feed ramps enhance reliability during feeding and cycling of ammunition. This upper receiver is commonly found in a variety of builds, particularly those focused on tactical applications or precision shooting.
Specifications
Daniel Defense Big Hole Flat Top Upper Receiver w/Feed Ramps 04-012-09001
Build history on GunPartPicker
Builders have been adding the Daniel Defense Big Hole Flat Top Upper Receiver w/Feed Ramps 04-012-09001 to their builds on GunPartPicker since March 2026. All time, it ranks #643 of the 1,681 upper receivers builders have added.
It was out of stock everywhere we track for all of September 2026, and today none of the 2 retailers we track has it in stock right now. Listed prices start at $239 at Primary Arms for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
Not sure which upper receiver to pick?
We ranked every upper receiver by how often it shows up in real builds on GunPartPicker.
Read the guide: Most Popular AR-15 Upper Receivers →Check it against the live catalog:
Frequently Built With
The part most often added in each category by the builds that include this one
Daniel Defense Complete Bolt/carrier Group, M16
Radian Weapons AR-15 Raptor-SD Ambidextrous Charging Handle OD Green
Radical Firearms Complete AR-15 Lower Receiver
Daniel Defense Overmolded Pistol Grip (No Trigger Guard) - Tornado Grey
VLTOR Weapon Systems A5 Receiver Extension Tube
Radian Weapons Talon Ambidextrous Safety Selector 2-Lever KIT - Radian Grey
Builds Featuring This Part
See all 1 →Builds in the community that include the Daniel Defense Big Hole Flat Top Upper Receiver w/Feed Ramps 04-012-09001
| Build | Parts | Total |
|---|---|---|
 | 27 | $6471.37 |
No reviews yet. Be the first to review this product!