Does the Primary Weapons Systems MK1 5.56x45mm AR work with the Primary Weapon Systems Brownells?

Primary Weapons Systems MK1 5.56x45mm AR Lower, Black - 18M100RM1B

Lower Receiver

Primary Weapons Systems MK1 5.56x45mm AR Lower

Brownells Exclusive Mk1 Alpha Lt 223 Wylde Complete Upper - Mk1 Alpha Lt 223 Wylde 14.5''''bbl 11.5'''' Mlok Hdgd Kodiak Brown

Upper Receiver

Primary Weapon Systems Brownells Exclusive MK1 Alpha Lt 223

from $1260.99

Primary Weapon Systems lower and Primary Weapon Systems upper compatibility

Yes, they fit

The Primary Weapons Systems MK1 5.56x45mm AR Lower works with the Primary Weapon Systems Brownells Exclusive MK1. Our compatibility rules found no conflict between them.

No one has built this exact setup yet, but Primary Weapon Systems lowers with Primary Weapon Systems 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 Primary Weapon Systems lower and Primary Weapon Systems upper

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

Lower Receivers builders put under the Primary Weapon Systems Brownells

Share of builds with the Primary Weapon Systems Brownells and any lower

  • Primary Weapons Systems MK1 5.56x45mm AR

    Not in enough builds yet to report.

  • Primary Weapon Systems Brownells

    Of upper picks
    0%
    Median paid
    $1327
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 Primary Weapon Systems lower and Primary Weapon Systems 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

Trigger

Pistol Grip

Suppressor

Rifle Scope

Stock & Brace

Bolt Carrier Group

Light

Primary Weapons Systems MK1 vs Primary Weapon Systems: specs and prices

Primary Weapons Systems MK1Primary Weapon Systems
Best pricen/a$1260.99 at Palmetto State Armory
Storesn/a2 of 2 in stock
AssemblyCompleteComplete
PlatformAR-15AR-15
Caliber5.56 NATO.223 Wylde
Trigger Pin.154n/a
FinishHardcoat Anodizedn/a
ColorBlackn/a
Lengthn/a14.5

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.

Primary Weapons Systems MK1 5.56x45mm AR Lower

No store lists it today.

Primary Weapon Systems Brownells Exclusive MK1

Price history, last 90 days

  • Primary Weapon Systems Brownells: lowest $999.99 on Aug 19, highest $1349.00 on Jul 6 over the last 90 days.

Upper Receivers most paired with Primary Weapon Systems lowers

The Primary Weapons Systems MK1 5.56x45mm AR is not in enough builds yet, so these are the most picked next to any Primary Weapon Systems lower. Only parts our rules say fit the Primary Weapons Systems MK1 5.56x45mm AR are listed.

Lower Receivers frequently paired with the Primary Weapon Systems Brownells

Most picked next to it in real builds. Only parts our rules say fit the Primary Weapon Systems Brownells are listed.