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CMMG 57B18AF Banshee 300 MK4 Upper 5.7x28mm Black
Cmmg

CMMG 57B18AF Banshee 300 MK4 Upper 5.7x28mm Black

UPC 00816422026852

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1 offer · 0 in stock · sorted by best price
RetailerPriceStockLast checkedDeal
Locked & Loaded$595.61Out of stock37m agoGo to deal

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Description

The CMMG Banshee 300 Upper features a 5" 4140 chromoly, threaded barrel, forged 7075-T6 aluminum receiver, CMMG RML4 M-LOK handguard, and a CMMG oversized ambidextrous charging handle.

Specs

BrandCmmg
CategoriesAr15 upper receivers, Parts · Parts
Caliber5.7X28MM
UPC00816422026852
Weight2.7 oz
Oal12.50"
TypeUpper
ModelBanshee 300
Twist1:9"
MuzzleThreaded
SeriesMK4
SightsNone, Optic Ready
HandguardsCmmg RML4 M-LOK
FinishcolorBlack
Barrel_finishBlack
Barrel_length5"
Similar_itemsUpper
Thread_pattern1/2"-28 tpi
Receiver_finishBlack Hard Coat Anodized
Handguard_finishBlack Hard Coat Anodized
Barrel_description4140 Chrome Moly
Barrel_length_range5" to 5.99"
Receiver_description7075-T6 Aluminum

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D.O.P.E.Price history

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

Current best
$595.61
Low
$595.61
Oct 10, 2026
High
$595.61
Oct 10, 2026
Tracking since
Oct 10, 2026
One price check so far ($595.61 on Oct 10, 2026). The chart fills in as retailers are re-checked.
Recent price checks (1)
DateRetailerPriceStock
Oct 10, 2026, 9:05 PM PTLocked & Loaded$595.61Out of stock

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