Does the Colt M4 LE6921ERP Upper Group 14.5in work with the CMC Triggers Enhanced Nitrided BCG?

Colt M4 Le6921erp Upper Group 14.5in With Bcg

Upper Receiver

Colt M4 LE6921ERP Upper Group 14.5in

from $930.27

Cmc Triggers Enhanced Nitrided Ar-15 Bcg - 5.56

Bolt Carrier Group

CMC Triggers Enhanced Nitrided BCG

from $157.99

Colt upper and CMC Triggers bolt carrier group compatibility

Yes, they fit

The Colt M4 LE6921ERP Upper Group 14.5in works with the CMC Triggers Enhanced Nitrided BCG. 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 Colt upper and CMC Triggers bolt carrier group

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

Upper Receivers builders put under the CMC Triggers Enhanced Nitrided BCG

Share of builds with the CMC Triggers Enhanced Nitrided BCG and any upper

  • Colt M4 LE6921ERP Upper Group 14.5in

    Of upper picks
    0%
    Median paid
    $930

  • CMC Triggers Enhanced Nitrided BCG

    Of bolt carrier group picks
    0.2%
    Median paid
    $158
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 Colt upper and CMC Triggers bolt carrier group

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

Charging Handle

Lower Receiver

Stock & Brace

Optic

Trigger

Pistol Grip

Light

Colt M4 LE6921ERP Upper Group vs CMC Triggers Enhanced Nitrided: specs and prices

Colt M4 LE6921ERP UpperCMC Triggers Enhanced
Best price$930.27 at BattleHawk Armory$159.99 at Optics Planet
Stores3 of 4 in stock5 of 7 in stock
AssemblyCompleten/a
PlatformAR-15n/a
Caliber5.56 NATOn/a
Receiver TypeM4n/a
Length14.5n/a
Cartridgen/a5.56 NATO / .300 BLK
Stylen/aM16 Bolt Carrier
Finishn/aNitride

Both for $1090.26 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.

Colt M4 LE6921ERP Upper Group 14.5in

CMC Triggers Enhanced Nitrided BCG

Price history, last 90 days

  • Colt M4 LE6921ERP Upper Group 14.5in: lowest $886.99 on Jul 5, highest $1093.99 on Aug 24 over the last 90 days.

Bolt Carrier Groups most paired with Colt uppers

The Colt M4 LE6921ERP Upper Group 14.5in is not in enough builds yet, so these are the most picked next to any Colt upper. Only parts our rules say fit the Colt M4 LE6921ERP Upper Group 14.5in are listed.

Upper Receivers frequently paired with the CMC Triggers Enhanced Nitrided BCG

Most picked next to it in real builds. Only parts our rules say fit the CMC Triggers Enhanced Nitrided BCG are listed.