Your basket is empty.

Basket

Help and contact

Free standard delivery over £199

100-day return policy

Newsletter

Sale

Over 300,000 customers - we say thank you!

4.93/5 "Very good" (1400+ reviews)

40,000+ products for hunting and shooting sports

WMD GUNS
AR-15/M16 NiB-X® BOLT ASSEMBLY

855899003232 100012192

Description

NiB-X~ Coating Gives Superior Performance

Nickel Boron exterior gives this bolt an incredibly hard finish that protects against wear and corrosion for the ultimate in durability. The extreme smoothness and built-in lubricity of the coating also reduces friction and gives carbon deposits nowhere to stick, so bolt can be easily wiped clean with a cloth or nylon brush. Comes complete with ejector, extractor, and gas rings installed.

SPECS: Carpenter 158 steel, NiB-X coating. Ejector, extractor, and gas rings included. Fits .223 5.56mm, 300 AAC Blackout, and similar AR platforms.

More...

109.9 109.9 1 GBP

Product no.: 100012192
WMD GUNS AR-15 NIB-X® COMPLETE BOLT
Mfr Part: 1-NIBXBA556 855899003232 Nickel Boron exterior gives this bolt an incredibly hard finish that protects against wear and corrosion for the ultimate in durability. The extreme smoothness and built-in lubricity of the coating also reduces friction and gives carbon deposits nowhere to stick, so bolt can be easily wiped clean with a cloth or nylon brush. Comes complete with ejector, extractor, and gas rings installed.

109.9 GBP 16 £109.90 *

Is a 'Call to order' product.

Delivery time approx. 7-14 days.
More than 10 pieces in USA warehouse

Specs: Cartridge: 223 Remington, 5.56 mm NATO, 300 AAC Blackout Finish: Nickel-Boron Make: AR-15

Add to shopping list

Ask question

Details

Add to shopping list

Ask question

Restrictions

Is a 'Call to order' product.

Top takeaways

Nickel Boron coating provides a hard finish that protects against wear and corrosion, enhancing durability.
The NiB-X® coating offers smoothness and built-in lubricity, reducing friction and preventing carbon adhesion for easy cleaning.
Comes complete with ejector, extractor, and gas rings, and is compatible with .223, 5.56mm, and 300 AAC Blackout AR platforms.

Attributes

Cartridge: 223 Remington,300 AAC Blackout,5.56 mm NATO Finish: Nickel-Boron Make: AR-15 Delivery weight: 0.045kg Shipping height: 25mm Shipping width: 76mm Shipping length: 84mm UPC : 855899003232

Item details

Made in USA
US export classification: 0A501.c

Upgrade your AR-15 with the NiB-X® Bolt Assembly! ✨ Enjoy superior durability and easy maintenance with its Nickel Boron finish.

Description

NiB-X~ Coating Gives Superior Performance

SPECS: Carpenter 158 steel, NiB-X coating. Ejector, extractor, and gas rings included. Fits .223 5.56mm, 300 AAC Blackout, and similar AR platforms.

More...

Site Navigation

Product Categories

Ordering

Customer Service

Connect

Secure payment methods

Trade Associations

Welcome!

to Brownells UK, your destination for anything gun related. With our roots in a genuine passion for firearms, we bring you an unmatched selection of Gun Parts, Firearm Accessories, Gunsmithing Tools, Scopes & Red Dot Sights and Expert Knowledge.

Whether you're looking to maintain, repair, or upgrade, we've got what you need!

For Shooters, By Shooters
We share your enthusiasm and know exactly what you're looking for because we're part of the community.

Massive Selection
From the essentials to the unique, find everything under one roof.

Our blend of tradition and innovation
Shop with the convenience of modern technology, backed by a legacy of experience.

Browse our collection and discover why we're the trusted name in shooting sports & hunting.