KAK Industry

K-SPEC M16 BCG w/Side Vent 5.56x45mm Chrome & Phosphate Black

KAK Industry K-SPEC M16 BCG w/Side Vent 5.56x45mm Chrome & Phosphate Black
Buy Now

KAK Industry

Overview

The KAK Industry K-SPEC M16 BCG w/Side Vent 5.56x45mm Chrome & Phosphate Black is a bolt carrier group. Compare prices from multiple merchants and find the best deal.

Specifications

MPN425-0512-005
Caliber5.56 NATO
StyleForged
FinishPhosphate

Available Merchants(4)

Prices checked

Price Alert

Get an email if the price drops 10% or more.
Ammunition Depot logo
Ammunition Depot
~$28.90 est. shipping
Shipping Speed
In Stock
$147.49
Buy Now
Brownells logo
Brownells
Free shipping
Shipping Speed
In Stock
$179.99
Buy Now
Palmetto State Armory logo
Palmetto State Armory
Free shipping
Shipping Speed
In Stock
$180.99
Buy Now
BattleHawk Armory logo
BattleHawk Armory
Shipping varies
Shipping Speed
Out of Stock
$179.99
Buy Now

Build history on GunPartPicker

Builders have been adding the KAK Industry K-SPEC M16 BCG w/Side Vent 5.56x45mm Chrome & Phosphate Black to their builds on GunPartPicker since April 2026. All time, it ranks #79 of the 505 bolt carrier groups builders have added.

Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today 3 of the 4 retailers we track have it in stock. Prices barely moved in September 2026, holding around $179.99, so there haven't been real sales lately. Buying today, the lowest price is $147.49 at Ammunition Depot, which matches the best price we saw in September.

Trending bolt carrier groups →

Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers

Not sure which bolt carrier group to pick?

We ranked every bolt carrier group by how often it shows up in real builds on GunPartPicker.

Read the guide: The Most Trusted AR-15 BCGs →

Check it against the live catalog:

Frequently Built With

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

CMMG AR-15 HD Pivot and Takedown Pin Parts KIT - 55AFF3B

CMMG AR-15 HD Pivot and Takedown Pin Parts KIT - 55AFF3B

Takedown Pin$16in 50% of them
PSA AR-15 Blem "Stealth" Stripped Lower Receiver

PSA AR-15 Blem "Stealth" Stripped Lower Receiver

Lower Receiver$70in 33% of them
Magpul AR-15 MOE Stock Collapsible Mil-Spec Black

Magpul AR-15 MOE Stock Collapsible Mil-Spec Black

Stock & Brace$34in 67% of them
FN AR-15 M16 Barrel 16 Mid-Length 5.56mm

FN AR-15 M16 Barrel 16 Mid-Length 5.56mm

Barrel$200in 50% of them
CMMG AR-15 Safety Selector

CMMG AR-15 Safety Selector

Safety$9in 50% of them
KAK Industry Low Profile Gas Block .750 Steel Phosphate Finish Black

KAK Industry Low Profile Gas Block .750 Steel Phosphate Finish Black

Gas Block$19in 50% of them

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

90.8%
AR-1590.8%
AR-106.4%
AR-92.8%

Caliber

69.5%
5.56 NATO69.5%
300 Blackout9%
.223 Wylde8.9%
.308 Win4.9%
9mm2.5%
Other5.3%

Gas System

51.1%
Mid-Length51.1%
Carbine26.3%
Pistol10.9%
Rifle10.2%
Blowback1.1%
Other0.3%

Review this product

Share your thoughts with other customers

Be the first to review

No reviews yet. Be the first to review this product!