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BROWNELLS
M16 6.8MM SPC BOLT CARRIER GROUP NITRIDE MP

050806112322 078102008

Description
Ratings (5)

An Ideal Bolt Carrier for a Special Cartridge

The Brownells M16 6.8 SPC Bolt Carrier Group offers premium performance for AR-15-style rifle chambered in the unique 6.8 SPC cartridge, ensuring reliable and durable service. The Brownells M16 6.8 SPC Bolt Carrier Group features construction using both 8620 and 9310 steel. The bolt face is constructed using the harder 9310 steel, which then undergoes heat treatment and shot peening. The carrier itself is machined from hardened 8620 steel. .224 Valkyrie compatible Quality assured with magnetic particle inspection Rubber insert and spring included in extractor construction Matte-black nitride finish provides reduced friction and increased rust-resistance Properly torqued and staked gas-key screws The Brownells M16 6.8 SPC Bolt Carrier Group also comes complete with a firing pin, cam pin and firing-pin retaining pin.

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Customer ratings for BROWNELLS M16 BOLT CARRIER GROUP 6.8MM SPC/224 VALK NITRIDE

Number of ratings: 5
From brownells.com: 5
Average rating: 2.8

Nitride does make a difference! (17/08/2017)

I was an early adopter of nitriding (M&P Sport 15) and have experienced the benefits of nitriding. The lubricity added after treatment is outstanding. It does make cleaning easier. I just wipe it down with a rag and some q-tips when needed. I still use grease and oil for lubing, that simply makes the BCG even that much slicker.

Do not waste your money on nickel boron. Nitriding will not flake and it does increases surface hardness which will reduce wear and tear.

Oops...most of the BCG is nitrided. (24/08/2017)

I had already posted a review, but this site does not allow edits so I added a second review.

The extractor on the bolt is not nitride treated. It is phosphate. I wanted the whole thing to be nitrided but that did not happen.

was sent a replacement BCG and it looked completely nitrided. Use it on my last range trip and when I got home and cleaned the firearm, the extractor looked like phosphate. It then had the rough texture that is phosphate. So 2 out of 2 were not up to snuff.

Called CS, Jodie, and she was very helpful. I reuested a RMA/shipping label to return the BCG.

Good not Great (24/02/2018)

This is a nice looking BCG, the machining is very, very smooth inside and out. It functioned flawlessly, was easy to clean and for the price I think its a good value. If the heat treating on the 9310 bolt is good, it should last, Only time will tell. My main complaint is that after 60 rds the nitride finish has warn off the first 16th" on both ends of the BC rails. This makes me believe the nitriding is thin. The finish still looks good inside the BC where the bolt and gas rings slide back and forth. I have several types of BCGs with dif coatings, NiB, NP3, chrome, and Life Coat some with 100s or even 1000s of rounds on them, they all wear on the rail ends eventually but not this quickly. Nitride is a good finish coat but this is obviously a little thin. If you are trying to save a buck this is still a good BCG.

Poor quality, damaged my barrel (25/02/2018)

The leading edge of bolt lugs had a sharp edge all the way around that bit into, and gouged the breech of my barrel causing the bolt to not fully rotate into battery. I didn't realize I had a problem untill the breech was damaged enough that a round wouldn't fully chamber, by then the damage was done.

I did get it to function again by lapping the bolt face and polishing the edges. However it would require sending the barrel to the manufacturer to remove the barrel extension and polish the breech to completely repair damage.

<img width="500" src='/userdocs/reviewimages/80d14420-eacd-4fb6-8655-d5a949a1fb4b.jpg' alt=''>

<img width="500" src='/userdocs/reviewimages/ecda35da-2932-4262-8c33-0c7e8e853191.jpg' alt=''>

Bolt face quality is horrible. (03/10/2018)

The bolt face lugs are horrible quality. Sharp and dig into barrel lug making it difficult to extract a round but hand and causing extraction issues win shooting.

Read 5 more ratings on brownells.com

164.9 164.9 1 GBP

Product no.: 078102008
BROWNELLS M16 BOLT CARRIER GROUP 6.8MM SPC/224 VALK NITRIDE
Mfr Part: AZT-M4-68-ST-00 050806112322 The Brownells M16 6.8 SPC Bolt Carrier Group offers premium performance for AR-15-style rifle chambered in the unique 6.8 SPC cartridge, ensuring reliable and durable service. The Brownells M16 6.8 SPC Bolt Carrier Group features construction using both 8620 and 9310 steel. The bolt face is constructed using the harder 9310 steel, which then undergoes heat treatment and shot peening. The carrier itself is machined from hardened 8620 steel. Quality assured with magnetic particle inspection Rubber insert and spring included in extractor construction Matte-black nitride finish provides reduced friction and increased rust-resistance Properly torqued and staked gas-key screws The Brownells M16 6.8 SPC Bolt Carrier Group also comes complete with a firing pin, cam pin and firing-pin retaining pin.

164.9 GBP 0 £164.90 *

Is a 'Call to order' product.

Not available.

Specs: Cartridge: 6.8mm Special, 224 Valkyrie Finish: Black Nitride Make: AR-15

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Is a 'Call to order' product.

Top takeaways

The Brownells M16 6.8 SPC Bolt Carrier Group is designed for AR-15-style rifles chambered in 6.8 SPC or 224 Valkyrie, featuring a matte-black nitride finish for durability and rust resistance.
Constructed from 8620 and 9310 steel, with a heat-treated and shot-peened 9310 steel bolt face, and includes a magnetic particle inspected carrier for assured quality.
Comes complete with a firing pin, cam pin, firing-pin retaining pin, and features a rubber insert and spring in the extractor, as well as properly torqued and staked gas-key screws.

Description

The Brownells M16 6.8 SPC Bolt Carrier Group offers premium performance for AR-15-style rifle chambered in the unique 6.8 SPC cartridge, ensuring reliable and durable service. The Brownells M16 6.8 SPC Bolt Carrier Group features construction using both 8620 and 9310 steel. The bolt face is constructed using the harder 9310 steel, which then undergoes heat treatment and shot peening. The carrier itself is machined from hardened 8620 steel. Quality assured with magnetic particle inspection Rubber insert and spring included in extractor construction Matte-black nitride finish provides reduced friction and increased rust-resistance Properly torqued and staked gas-key screws The Brownells M16 6.8 SPC Bolt Carrier Group also comes complete with a firing pin, cam pin and firing-pin retaining pin.

Attributes

Cartridge: 6.8mm Special,224 Valkyrie Finish: Black Nitride Make: AR-15 Delivery weight: 0.327kg Shipping height: 25mm Shipping width: 29mm Shipping length: 181mm UPC : 050806112322

Item details

Made in USA
US export classification: I(g)

Upgrade your AR-15 with the Brownells M16 6.8MM SPC Bolt Carrier Group. 🛠️ Enjoy reliable performance and durability with a matte-black nitride finish.

Description
Ratings (5)