DS Arms Complete Bolt Carrier Group

SKU: ZM485018509-A
MPN: ZM485018509-A
Manufactured by DS Arms
44 Reviews

$89.95

$90.77

In Stock

"We ship fast!" Order by 5PM EST M-F or 12PM EST Saturday and your order ships same day. FFL items may take longer to process.

$89.95

$90.77

In Stock

Details

The DS Arms Complete Bolt Carrier Group is a truly mil-spec BCG manufactured and assembled by a genuine USGI contractor. The carrier is incredibly tough 8620 Tool Steel matched with a 9310 super alloy steel bolt assembly. Both parts have been properly magnetic particle inspected to ensure there are no internal defects. This fully assembled 5.56 NATO bolt carrier group features a proper full length M-16 style bolt tail and properly staked gas key.

Finished with durable Manganese Phosphate with chrome lined internal and gas key.

Specifications

Bolt FinishManganese Phosphate
Bolt Material9310 Steel
BrandDS Arms
Caliber Gauge5.56 NATO
Carrier FinishManganese Phosphate
Carrier Material8620 Carpenter Steel
Carrier StyleM16 Bolt Carrier
High Pressure TestedUntested
Magnetic Particle InspectMagnetic Particle Inspected
ManufacturerDS Arms
PlatformAR-15
Weight11.68 Oz

Good quality except the extractor

by -

Extractor issues. Failure to Eject. Will try upgrading the extractor spring. Hopefully fixes the issue

Definitely not.

by -

Put this in my pistol build, and immediately got a failure to extract from the first round fired. Case was stuck tight in the barrel, and now I need to switch the extractor. 0/10 would not buy again.

Must have gotten a bad one...

by -

I'm not sure if I just got a bad BCG or what. Most people had good luck with this one, but mine won't catch and release the expended ammo. I have two AR's (.300 BLK and 5.56) and swapped out my older BCG and it worked perfectly with the ammo. I used my other BCG in both AR's and it worked fine. I disassembled the BCG and tried again but still no luck.

Parts missing

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This bolt wouldn't extract rounds from the chamber. I took the bolt apart and the extractor spring wasn't installed. It only had the plunger and o-ring.

Awesome

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Really pleased how fast they shipped the BCG and reading the other reviews i decided on getting this one thank you

Bcg

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Great mil spec big. Can't go wrong at this price for the average build.

Excellent bolt carrier group!

by

I bought this DSArms bolt assembly replace the factory "non-shrouded" bolt assembly in my Ruger AR556. The fit finish was excellent and it functioned smoothly and reliably with an assortment of .223 and 5.56 rounds. This is an excellent bolt group that is now a permanent part of my AR.

Ejector roll pin came out

by

I installed this BCG in a brand new 8.5" 300Blk upper and within 100 rounds the roll pin holding the ejector in has started working itself out. The pin is now all chewed up and bent. I won't be buying another DSA branded BCG

BCG

by

I haven't had it on the range yet, but it's put together with quality parts. Great price and shipping was quick.Thank you.

Good customer service

by

Ordered this BCG along with some other parts, but did not receive it with the shipment. I immediately called and was told to email a picture of the invoice. Within an hour I had a reply stating the part would be shipped out with apologies. Received it two days later. Great service and good quality part.

Nice price

by

Taking advantage of recent MSR parts price drops, I bought this to have as a spare. Looks fine, but I've not tried it yet.

Returned

by

The bolt carrier didn't seem to be rubbed out on the inside and the bolt operated roughly. There were also mars on the finish that indicated it had been installed and removed before I received it.

I like the bolt but...

by

The ejector roll pin came out most of the way,within a couple of magazines of ammo.Caused some stoppages. Will need to replace the pin. Otherwise the bolt seems great.

Awesome

by

What can you say about a bcg? It works. Use it my radical firearms upper that I purchased at the same time. No issues. Runs smooth. Good quality. Will buy another one soon.

Fantastic Deal

by

I was very surprised at the price of this BCG. How can Primary Arms sell a bolt carrier group for the price of the bolt alone? And it's not sub-standard by any means, fantastic deal!

Works great

by

Parts as described and arrived as expected

Fine BCG for the money

by

Looks pretty much like a GI bcg. The parkerized finish is even, chromed interior, nicely staked. It is surely nothing fancy, isn't a thing of beauty, feels rough as a corn cob, but the machine work is nicely done. Functioned properly during the 25 round zero and test firing I have done so far. I wavered between four and five stars, but for the $75 I paid it deserves five stars.

You get what you pay for.

by

The entire group is rough and doesn't slide all too freely in the receiver if you don't have enough lubricant at first. But for the price you really are getting what you pay for.

solid product

by

Good product. Excellent service from in store staff.

Complete BCG

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I'm really happy with the quality of this. I am planning on buying another for a spare. Shipping was also fast.

Good qualtiy BCG

by

Staking was good, runs good in an anderson upper.

Great Price!

by

Last piece of my pistol build. Ready for the range.

Good BCG, after some fiddling

by

The first two attempts to get a cartridge chambered were unsuccessful, and after disassembly I discovered why. A "donut" was added to the extractor spring, quite un-necessarily as it turns out. After removing the donut the BCG ran perfectly.

Great BCG

by

Awesome bolt carrier group for the price.I use tons of these bolts and have used them lubed with CLP or froglube and they run just fine.No light strikes or cycling issues.

DS arms complete bolt carrier group

by

primary arms is a first class company to dobusiness with, my only complaint is thatthey are usually out of stock of the itemsthat i need at that time, but are very goodat letting you know when item is availableagain, their service is second to none andi will continue to do business with them whenever i need something.