KAK Industry

K-SPEC M16 BCG w/Side Vent 5.56X45mm NATO Full Chrome

KAK Industry K-SPEC M16 BCG w/Side Vent 5.56X45mm NATO Full Chrome - Bolt Carrier Group for AR-15 - view 1
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KAK Industry

Overview

The KAK Industry K-SPEC M16 BCG w/Side Vent 5.56X45mm NATO Full Chrome is a bolt carrier group. Compare prices from multiple merchants and find the best deal.

Specifications

MPN425-0505-003
Caliber5.56 NATO
FinishChrome

Available Merchants(5)

Prices checked

Stock Alert

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Ammunition Depot logo
Ammunition Depot
~$28.90 est. shipping
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Out of Stock
$187.49
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Brownells logo
Brownells
Free shipping
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Out of Stock
$219.99
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Optics Planet logo
Optics Planet
Free shipping
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Out of Stock
$219.99
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BattleHawk Armory logo
BattleHawk Armory
Shipping varies
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Out of Stock
$219.99
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Palmetto State Armory logo
Palmetto State Armory
Free shipping
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Out of Stock
$220.99
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October 2026 on GunPartPicker

KAK Industry K-SPEC M16 BCG w/Side Vent 5.56X45mm NATO Full Chrome ranked #98 of the 258 bolt carrier groups builders added on GunPartPicker in October 2026. Builders have been adding it to their builds on GunPartPicker since April 2026. All time, it ranks #96 of the 505 bolt carrier groups builders have added. Builds with this bolt carrier group are mostly chambered in 5.56 NATO (90%, then .223 Wylde 10%), split between mid-length (57%) and carbine-length (43%) gas systems, and nearly all AR-15.

It was in stock most days in October 2026, but today none of the 5 retailers we track has it in stock right now. The best price drifted down from $219.99 to $187.49 over October 2026 without a real sale. Listed prices start at $187.49 at Ammunition Depot for when it comes back.

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Frequently Built With

The part most often added in each category by the builds that include this one

Radian Weapons AR-15 Raptor-Lt Ambidextrous Charging Handle Black

Radian Weapons AR-15 Raptor-Lt Ambidextrous Charging Handle Black

Charging Handle$73in 27% of them
Griffin Armament MK2 Ambi Stripped AR-15 Lower Receiver - Ambidextrous Controls - Flared Magwell - Anodized Black - MK2AL

Griffin Armament MK2 Ambi Stripped AR-15 Lower Receiver - Ambidextrous Controls - Flared Magwell - Anodized Black - MK2AL

Lower Receiver$202in 27% of them
Expo Arms 5.56 NATO AR-15 Barreled Upper - 16" - Mid-Length - Overrun

Expo Arms 5.56 NATO AR-15 Barreled Upper - 16" - Mid-Length - Overrun

Upper Receiver$280 · out of stockin 18% of them
Hogue AR-15 OverMolded Pistol Grip - Beaver Tail - No Finger Grooves - Black

Hogue AR-15 OverMolded Pistol Grip - Beaver Tail - No Finger Grooves - Black

Pistol Grip$25in 9% of them
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger

Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger

Trigger$335in 18% of them
M-LOK BCMGUNFIGHTER Short Vertical Grip Polymer Black

M-LOK BCMGUNFIGHTER Short Vertical Grip Polymer Black

Foregrip$19in 18% of them

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Caliber

90%
5.56 NATO90%
.223 Wylde10%

Gas System

57.1%
Mid-Length57.1%
Carbine42.9%

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