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*Blemishes: Parts may have minor cosmetic blemishes in the coating and/or material. These blemishes are strictly cosmetic and do NOT affect function in any way. We can not hand pick parts or send pictures of exact blemishes. Blemished items are not eligible for return or exchange.
M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - HYBRID GOLD TITANIUM NITRIDE (TiN)
We decided to carry a quality BCG in a TiN coating that is more cost effective. The way we did this is by only coating the carrier in TiN. The other parts are Melonite Nitride treated. We also chose a more cost effective polishing treatment. The result is an affordable, quality BCG that looks like other BCG's that cost twice as much! If you're looking for a perfect, "Grade A" BCG, check out our Radiant version.
Gold Titanium Nitride (TiN) is the staple of Physical Vapor Deposition (PVD) coatings. Aesthetically, it is one of the most eye catching coatings the firearms industry. Mechanically, its film lubricant properties assists materials where high wear resistance and lubricity is needed. Increased speed, low coefficient of friction and reduced carbon buildup will result in a smoother action and increase consistency.
Carrier Group Coating:- M16 Profile Carrier 8620 - TiN Gold Coating
- Low 0.45 Coefficient of Friction (CoF)
- High Corrosion and Chemical Resistance
- High Hardness: 2600 Vicker
- Thickness: 2-3 micron
- Maximum Temperature: 900° F
- Color: Gloss Gold
- Longer Part Life
- Reduce Friction
- Improve Lubricity
- Abrasion and Wear Resistance
- Faster Speeds and Feeds
- Easy Cleanup
Bolt and Parts Properties:
- Bolt: Mil-Spec Carpenter No. 158 (C158) Steel Bolt - Nitride
- MPI Tested Heat Treated and Shot Peened
- Extractor: Precision Machined Heat Treated Billet - Nitride
- Gas Rings: Stainless Steel per Mil-Spec
- Gas Key: 4140 Steel - Nitride
- Gas Key Screws: Grade 8 Properly Staked
- Cam Pin: Precision Machined - Nitride
- Retaining Pin: Precision bent and cut to length
- Firing Pin: Stainless Steel
- Assembled ready to drop in your AR-15
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BCG Tin coated 
Great product 
