#boltcarriergroup

[christiangrest]

What Bolt Carrier Group Should I buy? 

As the AR platform has gained popularity over the past few decades, there have been a myriad of companies popping up and producing quality parts for your AR project…and of course there are some not so quality options out there as well. One the parts that can have some varying degrees of quality and performance are the bolt carrier group in your AR rifle or pistol. What exactly makes one bolt carrier group stand out from another? We’re going to discuss some differences in bolt carrier groups and why you might want one over the other. 

The bolt carrier group is often considered by many a stoner weapon platform aficionado to be the heart of the platform. I would argue the bolt carrier group and the selected barrel assembly to be the heart whereas the bolt carrier group is one of the heart atrium and ventricle. There is them spec variety of a bolt carrier group which includes an 8620 steel carrier assembly, grade 8 fasteners properly staking of the gas key and grade 8 screws for the gas key. The bolt itself if a true mil-spec bolt will be made from Carpenter 158 steel and have magnetic particle inspection and high pressure testing performed. This mil spec variety is considered the pinnacle of how a bolt carrier should be manufactured. But is that still true today?

So many manufacturers have started manufacturing bolt carrier groups with differences in materials, different coatings for lubricity and durability and even some of the physical characteristics have changed a bit for some of the parts and features of a bolt carrier group. The most hotly debated variant of the bolt carrier group has got to be the bolt itself and the material used. Many, many bolts manufactured today are not made of the standard C158 steel, but are rather manufactured from 9310. It is a hotly debated topic that 9310 is not as strong of a material as the C158 variety, but that argument has wained in recent years. If a 9310 bolt is properly heat treated, they say it can in fact be stronger than C158 steel. Personally, I have run either bolt styles and have not had a bolt lug shear on either variety of bolt material. Typically a 9310 bolt will have some sort of a nitride coating which adds to it’s strength and durability. 

Coatings have also come into play and caused some arguments one way or another. A standard mil spec bolt carrier group will be a phosphate finish. Nitride finished bolt carrier groups are also super common these days and I truly prefer such a coating. Nickel Boron, PVD and TiN coatings have also become popular, although I don’t believe they offer much other than looks over a god quality nitride finished bolt carrier group.

So which bolt carrier group should you purchase? My recommendation is always one that is from a manufacturer know for quality parts. One look over at Brownells and you’ll have access to Brownells manufactured bolt carrier groups, but also those manufactured by SOLGW, Geissele, BCM, Spike’s Tactical, Aero Precision and many more. I would consider any of these quality for the job at hand. The advantages you will get with the higher ned offerings will typically be better fit/finish, maybe better quality gas key screws etc… but at the end of the day, the cheapest bolt carrier group will do the job for the majority of people. 

[shootersfaync]

Looking for an affordable bolt carrier group BCG for your build??? #shootersfaync #braggblvd #bcg #boltcarriergroup #ar15build #buildablaster #ar15 #fay #fayetteville #fayettevillenc #ftbragg #ftbraggnc #fortbragg #fortbraggnc #socialdistancing #2a #2amendment #coronapocalypse (at Bragg Blvd) https://www.instagram.com/p/B-FXUp3Jqd6/?igshid=1xcpob2yxldyg

[pamaxtactical]

There is only a few words that can describe how beautiful this looks, and one of them is X-Slick.

Merry Christmas and Happy New Year!

[thekommandoblog]

A complete M4 style AR-15 upper for $200? A reality in 2017.

[razorphilosophy]

One of many pictures of #freedom #neverforget. #dtom #2amendment #donttreadonme #livefreeordie #hashtagtical #bcg #madeinusa #pewpewlife #dailybadass #boltcarriergroup #223 #rifle #gunnut #gunsofinstagram #gotrain #gun #2a #rifleman #pewpew #defendthesecond #righttobeararms #palmettostate #igmilitia #tactical #shooter #iamnae

[jesse-b-outdoors]

One good thing about the bolt in the @bear_creek_arsenal bolt carrier group is that it’s MPI tested. Should be a good strong bolt. #bearcreekarsenal #jesseboutdoors #bcg #boltcarriergroup #ar15 #ar47 #merica https://www.instagram.com/p/Bsy688AnBME/?utm_source=ig_tumblr_share&igshid=1lnqc91jjs82u

[hybriddefensive]

Just a reminder that our BCGs are on sale for 3 more days, ending October 26th! $115 gets you a BCG that’s been properly assembled, individually tested, then test-fired as an assembly, so you know it will give you reliable service! #boltcarriergroup #ar15 #arbuilder #c158 #mpt #hp https://www.instagram.com/p/BpRXhiknWr_/?utm_source=ig_tumblr_share&igshid=ux5zbtletmbl

[carlos12374]

My Cmmg mutant bolt Carrier beefy SoB ... lol #cmmginc #mutant #mk47 #762x39 #kalashlife #pewpewlife #boltcarriergroup (at Corpus Christi, Texas)

[azws]

#Repost @deadfootarms 👈 Follow our #industrypartners👊🔫 ・・・ This is a good week to save on our MCS Bolt Carrier Modification Program. Learn more at our website, link in bio. #deadfootarms #weapons #boltcarriergroup #556 #survival #2adefensers #tacticalgear #AZWS https://www.instagram.com/p/BRUpLLKhXLP/

[cactustactical-blog]

$119.99  M4 / AR-15 BOLT / BOLT CARRIER GROUPS

The AR-15 / M4 .223 Bolt Carrier Groups are standard mil-spec with Carpenter 158 bolts and have been shot peened and mag pen tested. The carrier is made from 8620 alloy steel. Coatings: Hard chrome carrier bore; hard chrome gas key bore; manganese phosphate finish per mil spec.

https://www.cactustactical.com/M4-AR-15-BOLT-BOLT-CARRIER-GROUPS_p_1028.html

[shootersfaync]

All the colors of the tactical rainbow! #shootersfaync #braggblvd #bcm #kac #nib #fde #bronze #gold #silver #rainbow #bcg #boltcarriergroup #colors #complete #bravocompany #shinny #fay #fayettevillenc #ftbragg #ftbraggnc #fortbragg #fortbraggnc #ar15 #ar15porn #engine #2a (at Bragg Blvd) https://www.instagram.com/p/B5nkHLzg8ZN/?igshid=1grdusx7qg3ah

[aegisguns]

In stock now at #aegistactical @aegistactical get them at aegisguns.com E-BCG by Lantac USA! Who needs one? Tag them! #madeinamerica #USA #boltcarriergroup #smoothcam #223 #AR15 #accessories #lantac #lantacusa #NIB #shiny #studio #portforward #firingpin #precisionbolt #chrome #nickelboroncoating #bestofthebest #bcg #holyfreakincow #2a #EBCG #muzzlebrake #teamlantac photo by @joekrawtschenko @lantac_usa I love it!! http://ift.tt/2meqgcP http://aegisguns.com

[pamaxtactical]

@recoilweb Newest Fallout themed issue is Live, visit their website at www.recoilweb.com #recoilmagazine

[jesse-b-outdoors]

In the first picture you can see the nickel boron 223/5.65 bcg and the 7.62x39 bcg look about the same. The second picture is where you see the only difference. The bolt is made bigger for the 7.62x39 round to fit in it. #jesseboutdoors #ar15 #ar47 #pewpewlife #thegunlife #merica #boltcarriergroup https://www.instagram.com/p/BswCU3KnFvR/?utm_source=ig_tumblr_share&igshid=368gtwc1dnth

[hybriddefensive]

I’m not gonna say that this key’s perfect staking is only made better by the addition of Optimized Carrier Key Screws, but, yeah, it is... #boltcarriergroup #ar15 #guns #gunsofinstagram #igmilitia #igmilitiava

[shootersfaync]

When your blaster needs an engine: #wecanhelpwiththat #shootersfaync #braggblvd #ar15 #ar15build #boltcarriergroup #bcg #nib #andersonmanufacturing #failzero #risearmament #brownells #kac #556nato #9mm #buildablaster #fay #fayetteville #fayettnam #fayettevillenc #ftbragg #ftbraggnc #fortbragg #fortbraggnc #2a (at Bragg Blvd) https://www.instagram.com/p/B1y23g2gpAS/?igshid=6votrn244iwn