Does the LANTAC SF 15 AR Lower work with the Radical Firearms 5.56 Socom Upper?
Lower Receiver
LANTAC SF 15 AR Lower
from $189.99
Upper Receiver
Radical Firearms 5.56 Socom Upper
from $399.99
Lantac lower and Radical Firearms upper compatibility
Yes, they fit
The LANTAC SF 15 AR Lower works with the Radical Firearms 5.56 Socom Upper. Our compatibility rules found no conflict between them.
This exact setup is in a real GunPartPicker build.
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 Lantac 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 LANTAC SF 15 AR Lower and any upper
- KAK Barreled29%
- This pairRadical Firearms 5.56 Socom Upper14%
Share of builds with the Radical Firearms 5.56 Socom Upper and any lower
- This pairLANTAC SF 15 AR Lower0.5%
LANTAC SF 15 AR Lower
- Of lower picks
- 0%
- Median paid
- n/a
Radical Firearms 5.56 Socom Upper
- Of upper picks
- 1.3%
- Median paid
- $400
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 Lantac 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.
Charging Handle
Fits both
Bolt Carrier Group
Aero Precision 5.56 BCG W/C158 Bolt
Fits both
Stock & Brace
Pistol Grip
LANTAC SF 15 AR Lower vs Radical Firearms 5.56 Socom: specs and prices
| LANTAC SF 15 AR Lower | Radical Firearms 5.56 Socom | |
|---|---|---|
| Best price | $189.99 at BattleHawk Armory | $399.99 at Primary Arms |
| Stores | 0 of 2 in stock | 1 of 1 in stock |
| Assembly | Stripped | Complete |
| Platform | AR-15 | AR-15 |
| Trigger Pin | .154 | n/a |
| Finish | Hardcoat Anodized | n/a |
| Color | Black | n/a |
| Caliber | n/a | 5.56 NATO |
| Length | n/a | 16 |
Both for $589.98 at today's best prices.
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
- LANTAC SF 15 AR Lower: lowest $189.99 on Jul 5, highest $189.99 on Jul 5 over the last 90 days.
- Radical Firearms 5.56 Socom Upper: lowest $399.99 on Jul 6, highest $399.99 on Jul 6 over the last 90 days.
Upper Receivers frequently paired with the LANTAC SF 15 AR Lower
Most picked next to it in real builds. Only parts our rules say fit the LANTAC SF 15 AR Lower are listed.
Lower Receivers frequently paired with the Radical Firearms 5.56 Socom Upper
Most picked next to it in real builds. Only parts our rules say fit the Radical Firearms 5.56 Socom Upper are listed.
