Does the Yankee Hill Machine Co work with the Radical Firearms 5.56 Barreled Upper?
Yankee Hill Machine lower and Radical Firearms upper compatibility
Yes, they fit
The Yankee Hill Machine Co works with the Radical Firearms 5.56 Barreled Upper. Our compatibility rules found no conflict between them.
No one has built this exact setup yet, but Yankee Hill Machine lowers with Radical Firearms uppers are a common pairing.
Counted from real GunPartPicker builds: parts lists people put together while planning to buy.
Checked by the same rules the AR builder runs on every part you add: caliber, frame size, receiver pattern, thread pitch and gas length.
Fit is judged from the specs retailers list, which can be missing or wrong. Confirm with the manufacturer before you buy, and have a qualified gunsmith check any build before you fire it.
How often builders pair the Yankee Hill Machine lower and Radical Firearms upper
Backed by tens of thousands of qualified builds that have both a lower and an upper.
Share of builds with the Radical Firearms 5.56 Barreled Upper and any lower
Yankee Hill Machine Co
- Of lower picks
- 0%
- Median paid
- $2
Radical Firearms 5.56 Barreled Upper
- Of upper picks
- 1.2%
- Median paid
- n/a
How we count ⌄
These shares come from GunPartPicker's build data: real parts lists people put together while planning a purchase, not sales or surveys. A build counts a part only when it is the final pick for its slot, so parts that were swapped out never count. Fit never comes from these numbers; it comes from our compatibility rules alone.
Frequently built with the Yankee Hill Machine lower and Radical Firearms upper
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Handguard

TacFire Maximize Your 's Potential
Fits both
Gas Block
Barrel
Bolt Carrier Group
Trigger
Pistol Grip
Yankee Hill Machine Co vs Radical Firearms 5.56 Barreled: specs and prices
| Yankee Hill Machine Co | Radical Firearms 5.56 | |
|---|---|---|
| Best price | $374.00 at BattleHawk Armory | n/a |
| Stores | 1 of 3 in stock | n/a |
| Assembly | Stripped | Complete |
| Platform | AR-15 | AR-15 |
| Caliber | Multi | 5.56 NATO |
| Trigger Pin | .154 | n/a |
| Finish | Hardcoat Anodized | n/a |
| Color | Black | n/a |
| Gas System Length | n/a | Mid-Length |
| Length | n/a | 16 |
Today's best prices and 90 day price history
Every store we track for each part, cheapest in stock first. Prices are checked through the day.
Price history, last 90 days
- Yankee Hill Machine Co: lowest $374.00 on Jul 11, highest $374.00 on Jul 11 over the last 90 days.
Upper Receivers most paired with Yankee Hill Machine lowers
The Yankee Hill Machine Co is not in enough builds yet, so these are the most picked next to any Yankee Hill Machine lower. Only parts our rules say fit the Yankee Hill Machine Co are listed.
Lower Receivers frequently paired with the Radical Firearms 5.56 Barreled Upper
Most picked next to it in real builds. Only parts our rules say fit the Radical Firearms 5.56 Barreled Upper are listed.





















