Does the Radical Firearms 5.56 Barreled Upper work with the Radical Firearms 7.62x39mm Melonite?

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

Upper Receiver

Radical Firearms 5.56 Barreled Upper

Radical Firearms 7.62x39mm Melonite Bolt Carrier Group

Bolt Carrier Group

Radical Firearms 7.62x39mm Melonite

Radical Firearms upper and Radical Firearms bolt carrier group compatibility

They fit, with a catch

The Radical Firearms 5.56 Barreled Upper works with the Radical Firearms 7.62x39mm Melonite, with one thing to check: Bolt Carrier Group (7.62x39mm) has a 7.62x39 bolt; a 5.56 NATO build needs a 5.56 / .223 bolt.

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 Radical Firearms upper and Radical Firearms bolt carrier group

Backed by thousands of qualified builds that have both an upper and a bolt carrier group.

Bolt Carrier Groups builders put on the Radical Firearms 5.56 Barreled Upper

Share of builds with the Radical Firearms 5.56 Barreled Upper and any bolt carrier group

Upper Receivers builders put under the Radical Firearms 7.62x39mm Melonite

Share of builds with the Radical Firearms 7.62x39mm Melonite and any upper

  • Radical Firearms 5.56 Barreled Upper

    Of upper picks
    1.2%
    Median paid
    n/a

  • Radical Firearms 7.62x39mm Melonite

    Of bolt carrier group picks
    0%
    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 Radical Firearms upper and Radical Firearms bolt carrier group

The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.

Lower Receiver

Handguard

Charging Handle

Gas Block

Barrel

Trigger

Light

Pistol Grip

Optic

Radical Firearms 5.56 Barreled vs Radical Firearms 7.62x39mm: specs and prices

Radical Firearms 5.56Radical Firearms 7.62x39mm
Best pricen/an/a
Storesn/an/a
AssemblyCompleten/a
PlatformAR-15n/a
Gas System LengthMid-Lengthn/a
Caliber5.56 NATOn/a
Length16n/a
Cartridgen/a7.62x39mm
Stylen/aM16 Bolt Carrier
Finishn/aNitride

Bolt Carrier Groups 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.

Upper Receivers most paired with Radical Firearms bolt carrier groups

The Radical Firearms 7.62x39mm Melonite is not in enough builds yet, so these are the most picked next to any Radical Firearms bolt carrier group. Only parts our rules say fit the Radical Firearms 7.62x39mm Melonite are listed.