AR-15 upper receiver coverage from AR15Parts.com
AR15 Uppers is the editorial arm of AR15Parts.com, focused on one narrow slice of the AR-15 world: the upper receiver and everything bolted to it. We publish research-driven guides so builders can make better decisions before they spend money on parts.
We explain how upper receivers and complete uppers work, what to look for, and how to choose, not which single SKU to buy.
Content is written for people who assemble, maintain, or plan AR-15 builds themselves.
We are the editorial arm of AR15Parts.com. Guides come first, and when you are ready to buy we link you to the shop.
How we research and write
Every guide is written by the AR15 Uppers editorial team and reviewed against manufacturer spec sheets, published mil-spec documentation, and hands-on building experience. When a topic touches on safety, function, or legality, we prefer to be conservative and explicit rather than clever.
- We do not accept payment for coverage of specific brands or SKUs.
- We update guides when specs, industry consensus, or common failure modes change.
- We flag anything that is opinion, judgement, or preference rather than spec.
- We never publish legal advice. Firearm laws vary by federal, state, and local jurisdiction.