Dirty Bird AR-15 5.56/.223/300BLK Bolt Carrier Group – Phosphate/Chrome-Lined - D127
In stock
The Dirty Bird AR-15 Bolt Carrier Group comes fully assembled and ready to be dropped in. The carrier body is machined from 8620 steel, heat treated, & MP inspected. The carrier’s bore is hard chromed for increased corrosion resistance and reliability, per mil-spec. The bolt is machined from Carpenter 158 tool steel, shot peened to relieve stress, individually high-pressure tested and MP inspected. The bolt and carrier are both treated with a Mil-Spec phosphate coating for its durability and corrosion resistance. This Dirty Bird Phosphate Bolt Carrier Group features a gas key tube that is hard chromed and properly torqued and staked screws.
Bolt
- Machined from Carpenter Technology No. 158 alloy.
- Heat treated
- Shot peened per ASTM B851/SAE AMS2430S
- Individually High Pressure Tested (test fired)
- HP proof testing, 100% using a high pressure M197 or SAAMI commercial equivalent, without evidence of failure
- Individually Magnetic Particle Inspected after Initial Test Fire
- Manganese Phosphate Finish
Extractor
- Tool Steel Extractor
- Manganese Phosphate Finish
- Mil-Spec O-Ring
Carrier
- Machined from AISI 8620 aircraft quality alloy per ASTM A108/A322-13
- Full Mass M16 Profile
- Stress Relieved
- Hard Chrome Bore
Gas Key
- Machined from 4130 chromoly steel alloy per ASTM A108/A322-13
- Grade 8 Hardware
- Properly Staked
- Hard Chrome Internal
- Permatex sealed
MADE IN THE USA!
Backed by the Dirty Bird Industries Lifetime Warranty!
| Weight | 0.74 oz |
|---|---|
| Bolt Material | |
| Cartridge Compatibility | .223/5.56 NATO/.300 BLK |
| Finish | |
| Carrier Profile | |
| High Pressure Tested | |
| Magnetic Particle Inspected | |
| Platform | AR-15 |
| Bolt Finish | |
| MPN | D127 |
| UPC | 810084372258 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
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US
Pleasantly surprised.
This is perfection. Build quality is excellent, fit and function is excellent.
USDirty Bird Good Bird!
Haven't put to many rounds through it, but so far happy with purchase.
USLooks and works great
So far the bcg has been doing it's job. No issues, would consider ordering again
USWorked well
Fit tight, but cycles excellently! Dirty Bird is one of my favorite brands!
