Does the Radian Weapons AX556 Billet work with the Aero Precision M4E1 Threaded 16" 5.56?

Radian Weapons Ax556 Ambidextrous Billet Ar-15 Lower Receiver

Lower Receiver

Radian Weapons AX556 Billet

from $514.95

M4E1 Threaded 16" 5.56 Mid-Length Complete Upper Receiver w/ R-ONE Handguard

Upper Receiver

Aero Precision M4E1 Threaded 16" 5.56 Mid-Length w/ R-ONE

from $655.00

Radian lower and Aero Precision upper compatibility

Yes, they fit

The Radian Weapons AX556 Billet works with the Aero Precision M4E1 Threaded 16" 5.56 Mid-Length. Our compatibility rules found no conflict between them.

This exact setup has been built more than once on GunPartPicker.

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 Radian lower and Aero Precision upper

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

Upper Receivers builders put on the Radian Weapons AX556 Billet

Share of builds with the Radian Weapons AX556 Billet and any upper

Lower Receivers builders put under the Aero Precision M4E1 Threaded 16" 5.56

Share of builds with the Aero Precision M4E1 Threaded 16" 5.56 and any lower

  • Radian Weapons AX556 Billet

    Of lower picks
    0.1%
    Median paid
    $490

  • Aero Precision M4E1 Threaded 16" 5.56

    Of upper picks
    0.1%
    Median paid
    $655
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 Radian lower and Aero Precision upper

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

Charging Handle

Optic

Pistol Grip

Trigger

Bolt Carrier Group

Suppressor

Handguard

Muzzle Device

Gas Block

Barrel

Buffer Tube Assembly

Radian Weapons AX556 Billet vs Aero Precision M4E1 Threaded: specs and prices

Radian Weapons AX556 BilletAero Precision M4E1 Threaded
Best price$514.95 at Brownellsn/a
Stores6 of 9 in stockn/a
AssemblyStrippedComplete
PlatformAR-15AR-15
CaliberMulti5.56 NATO
Trigger Pin.154n/a
FinishHardcoat Anodizedn/a
ColorBlackn/a
Gas System Lengthn/aMid-Length
Receiver Typen/aM4E1
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.

Radian Weapons AX556 Billet

Aero Precision M4E1 Threaded 16" 5.56 Mid-Length

No store lists it today.

Price history, last 90 days

  • Radian Weapons AX556 Billet: lowest $514.95 on Jul 5, highest $533.99 on Sep 12 over the last 90 days.

Upper Receivers frequently paired with the Radian Weapons AX556 Billet

Most picked next to it in real builds. Only parts our rules say fit the Radian Weapons AX556 Billet are listed.

Lower Receivers frequently paired with the Aero Precision M4E1 Threaded 16" 5.56

Most picked next to it in real builds. Only parts our rules say fit the Aero Precision M4E1 Threaded 16" 5.56 are listed.