Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Questions & Answers
Would this be a good choice for 300 black out build? Expert Answer

Yes, the Jacob Grey Custom High Polished Nickel Boron 5.56 BCG can be used for a 300 Blackout build.

by Hunter, Gear Expert, May 9, 2022
Customer Reviews
Most Recent Reviews
My New Favorite by Alex D, September 20, 2022
Jacob Grey is quickly becoming my new favorite for everything firearms. I Recently did a build and wanted to try something new and different from Optics Planet and I found Jacob Grey. From the moment you open the box you can tell this is a high qua...
Read More...
Read 1 Review

Product Discontinued by Manufacturer

Jacob Grey Firearms High Polished Nickel Boron 5.56 Bolt Carrier Group (BCG) has been discontinued by Jacob Grey Firearms and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Parts, Bolt Carrier Groups yourself to try and find the perfect replacement for you!

Product Info for Jacob Grey Firearms High Polished Nickel Boron 5.56 Bolt Carrier Group (BCG)

This M16 Bolt Carrier Group BCG drops right into your M16, AR15 or M4 platform rifle. Or any of the Jacob Grey JG-15 upper receivers. We source our components from manufacturers that meet or exceed our high expectations. All parts are machined and properly heat treated to Mil-Spec followed by complete Nickel Boron coating, then polished to a high shine so less oils and lubricants are needed to have your BCG function as it needs to.image

Our Nickel Boron Bolt Carrier Group BCG is specifically coated to allow your rifle to operate smoothly, be easily maintained, and work longer without unnecessary cleanings and field strips. Jacob Grey warrants our products against defects or malfunction to such a degree that if your product is defective in any way we will gladly replace it. Every component, from the extractor to the firing pin, is made with exacting specifications to meet military standards and provide the best control possible. The Jacob Grey High Polished BCG is engineered to fit and work with the AR15, M4, and as a M16 BCG.

Features of Jacob Grey Firearms High Polished Nickel Boron 5.56 Bolt Carier Groups:

  • Carrier is polished after plating for increased lubricity;                            
  • Bolt Carrier Style: M16 Full Auto, Nickel Boron Coated Bore and Exterior;
  • Mil-Spec Ejector Springs, Firing Pin, Retaining Pin, Gas Rings, O-Ring;
  • Mil-Spec Heat Treated;
  • Lifetime warranty

Package Contents:

  • Jacob Grey Firearms High Polished Nickel Boron 5.56 Bolt Carier Groups

Magazine and Accessories

1–16 / 16
Previous
Next

Gun Triggers

1–13 / 13
Previous
Next

Gunsmithing Tools & Accessories

1–14 / 14
Previous
Next

Gun Parts and Accessories

1–53 / 53
Previous
Next

Gun Barrels

1–11 / 11

Gun Sights

1–17 / 17
Previous
Next

Gun Stocks

1–16 / 16
Previous
Next

Mounts, Rings and Accessories

1–15 / 15
Previous
Next

Related Products to Jacob Grey Firearms High Polished Nickel Boron 5.56 Bolt Carrier Group (BCG)

Jacob Grey Firearms High Polished Nickel Boron 5.56 Bolt Carrier Group (BCG) Unavailable & Discontinued Models

List of Unorderable Models

  • Jacob Grey Firearms High Polished Nickel Boron 5.56 Bolt Carrier Group BCG Steel, 556NBCGNB , MPN: 556NBCGNB , UPC: 850030294623 , Code: 4M6-BCG-SP5-556NBCGNB
Compare (0)