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CMMG 30D120A Barrel Sub-Assembly 300 Blackout 16.1" AR-15 4140 Chrome Moly Steel Black Nitride Carbine Length Medium Taper Profile
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CMMG 30D120A Barrel Sub-Assembly 300 Blackout 16.1" AR-15 4140 Chrome Moly Steel Black Nitride Carbine Length Medium Taper Profile

UPC 00815835016238

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1 offer · 1 in stock · sorted by best price
RetailerPriceStockLast checkedDeal
East Valley Tactical$217.47Low (5)12m agoGo to deal

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Description

CMMG's Barrel Sub-Assembly is ideal for building your custom AR-15 upper group. It comes with properly installed M4 barrel extension.

Specs

BrandCmmg
CategoryBarrels · Parts
Caliber300 Blackout
UPC00815835016238
TypeBarrel
ColorBlack
ModelBarrel Sub-Assembly
Twist1:7"
FinishNitride
SeriesMT
SightsNone
Material4140 Chromoly Steel
Barrel_typeCarbine Length
DescriptionCarbine
Finishcolor4140 CrMo, Salt Bath Nitride Finish
Firearm_fitAR-15
Barrel_length16.1"
Similar_itemsBarrel
Thread_pattern5/8"-24 tpi
Barrel_featuresThreaded
Barrel_material4140 Chrome Moly Steel
Caliber_or_gauge300 AAC Blackout/Whisper (7.62X35mm)
Length16.10"

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D.O.P.E.Price history

Lowest price across connected retailers, from every price check we've recorded.

Current best
$217.47
Low
$217.47
Oct 8, 2026
High
$217.47
Oct 8, 2026
Tracking since
Oct 8, 2026
One price check so far ($217.47 on Oct 8, 2026). The chart fills in as retailers are re-checked.
Recent price checks (1)
DateRetailerPriceStock
Oct 8, 2026, 5:15 PM PTEast Valley Tactical$217.47Low

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