Does the KE Arms Kp-15 Polymer work with the Radical Firearms 5.56 Barreled Upper?

Ar-15 Kp-15 Complete Lower Receivers Mil-Spec Polymer - Ar-15 Kp-15 Complete Lower Receiver Mil-Spec Polymer Odg

Lower Receiver

KE Arms Kp-15 Polymer

from $224.96

Radical Firearms 5.56 Barreled Ar-15 Upper - 16" - Primary Arms Exclusive

Upper Receiver

Radical Firearms 5.56 Barreled Upper

KE Arms lower and Radical Firearms upper compatibility

Yes, they fit

The KE Arms Kp-15 Polymer 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 KE Arms 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 KE Arms lower and Radical Firearms upper

Backed by tens of thousands of qualified builds that have both a lower and an upper.

Lower Receivers builders put under the Radical Firearms 5.56 Barreled Upper

Share of builds with the Radical Firearms 5.56 Barreled Upper and any lower

  • KE Arms Kp-15 Polymer

    Of lower picks
    0%
    Median paid
    n/a

  • 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 KE Arms 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

Charging Handle

Gas Block

Barrel

Bolt Carrier Group

Trigger

Light

Pistol Grip

Optic

KE Arms Kp-15 Polymer vs Radical Firearms 5.56 Barreled: specs and prices

KE Arms Kp-15 PolymerRadical Firearms 5.56
Best price$224.96 at AT3 Tacticaln/a
Stores0 of 2 in stockn/a
AssemblyCompleteComplete
PlatformAR-15AR-15
CaliberMulti5.56 NATO
Trigger Pin.154n/a
ColorOD Greenn/a
Gas System Lengthn/aMid-Length
Lengthn/a16

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.

KE Arms Kp-15 Polymer

Radical Firearms 5.56 Barreled Upper

No store lists it today.

Price history, last 90 days

  • KE Arms Kp-15 Polymer: lowest $224.96 on Jul 5, highest $224.96 on Jul 5 over the last 90 days.

Upper Receivers most paired with KE Arms lowers

The KE Arms Kp-15 Polymer is not in enough builds yet, so these are the most picked next to any KE Arms lower. Only parts our rules say fit the KE Arms Kp-15 Polymer 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.