MP Brn AR-15/M16 5.56mm Bolt Carrier Group, Mpi, Nickel Boron
$116.42 at Brownells
In stock Sale
M16 Lightweight Bolt Carrier Group 5.56X45mm Nickel Boron
Brownells · Bolt Carrier Group
No ratings yetBest price
$229.99at Brownells
Out of stock checked Oct 22, 2026
In stock now instead
- MP Brn AR-15/M16 5.56mm Bolt Carrier Group, Mpi, Nickel Boron $116.42at Brownells
- Rise Armament Low-Mass Bolt Carrier Group BCG .223/5.56 AR-15 M… $229.99at Kentucky Gun Co
- FailZero AR-15 5.56x45 NATO Bolt Carrier Group Stainless $233.99at OpticsPlanet
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells | $229.99checked Oct 22, 2026 | Out of stock | Buy at Brownells |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Similar bolt carrier groups in stock
This part is out of stock at every store we track. These similar bolt carrier groups are in stock, with today's prices.
Rise Armament Low-Mass Bolt Carrier Group BCG .223/5.56 AR-15 M16 Black Nitride
$229.99 at Kentucky Gun Co · 4 stores
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FailZero AR-15 5.56x45 NATO Bolt Carrier Group Stainless
$233.99 at OpticsPlanet · 2 stores
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M16 Bolt Carrier Group FDE
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Mil-Spec AR-15 Bolt Carrier Group 5.56
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Bolt Carrier Group K-Spec M16 BCG W/Side Vent 5.56x45mm NATO Full Chrome
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Price history
Dashed line = out of stock. Tracking since Sep 27, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $229.99 | $229.99 | $229.99 |
Since Sep 27, 2026.
About this part
The M16 Lightweight Bolt Carrier Group 5.56X45mm Nickel Boron is a 5.56 / .223 bolt carrier group from Brownells. One store lists it, Brownells at $229.99.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Specifications
- Manufacturer
- Brownells
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
Designed for Lightweight, Low-Recoil Rifles
The Brownells M16 Lightweight Bolt Carrier Group is purpose-built for AR-15 owners looking to improve aspects of their rifle with a simple component swap, eliminating the need for major component replacement or amateur gunsmithing work.
The Brownells M16 Lightweight Bolt Carrier Group is machined from 8620 tool steel and features a heavy-duty bolt made using 9310 tool steel, which is then magnetic-particle inspected to ensure quality. The bolt is light enough to reduce the overall weight of a lightweight AR build, and the lightness of the entire assembly also reduces the felt recoil of any AR-style firearm.
- Available with nickel-boron, titanium-nitride or nitride finishes
- Weighs 8.2 ounces
- Compatible with AR-15s chambered in 5.56 NATO, .223 Rem., 300 Blackout and .204 Ruger
The Brownells M16 Lightweight Bolt Carrier Group ships completely assembled and features the necessary black insert and O-ring around the extractor, as well as a torqued and staked gas key.
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