1. Home
  2. Firearm Components
  3. Slides & Receivers
  4. Bolt Carrier Groups
Bolt Carrier Groups

WMD Guns Bolt Assembly for AR-15 5.56 NATO/.223 – NiB-X Finish (1-NIBXBA556)

No reviews yet Be the first to review
Brand WMD Guns Shop all → MFR# 1-NIBXBA556 UPC 855899003232
Shop all →
Free ground shipping
WMD Guns Bolt Assembly for AR-15 5.56 NATO/.223 – NiB-X Finish (1-NIBXBA556)

Click the image to open it full size. Additional supplier images appear when available.

Why customers choose this item

  • Fits 223 and 556 NATO
  • Bolt assembly component
  • NiB-X coated finish
  • 9310 case hardened steel
  • Magnetic particle inspected
  • Enhanced extractor design

Product highlights

  • 5.56 NATO and .223 Remington bolt assembly designed for AR-15 rifle platforms
  • NiB-X nickel boron coating improves surface hardness lubrication and cleaning characteristics
  • Bolt constructed from case hardened 9310 steel for strength and durability
  • Magnetic particle inspected bolt ensures structural integrity and defect detection
  • Includes high performance extractor optimized for reliable cartridge extraction during operation
  • Engineered for consistent locking and unlocking interaction with standard barrel extensions

Product description

The WMD Guns Bolt Assembly NiB-X 5.56 NATO 223 Remington is a bolt assembly designed for use in AR-15 rifles chambered in 5.56 NATO or .223 Remington.

The WMD Guns Bolt Assembly NiB-X is manufactured from case hardened 9310 steel and features a NiB-X nickel boron finish along with magnetic particle inspection for quality control. The assembly includes a high-performance extractor and is configured for compatibility with standard AR-15 bolt carrier groups. This product is used for cycling and locking operations within the rifle action. In standard configurations, the material composition and inspection process define its structural properties. The WMD Guns Bolt Assembly NiB-X 5.56 NATO 223 Remington is categorized as a bolt assembly and is suitable for rifle maintenance or replacement of worn internal components.

Specifications

Brand
WMD Guns
Model / Series
1-NIBXBA556
MPN (Manufacturer Part #)
1-NIBXBA556
UPC
855899003232
Item Type (leaf)
Bolt Carrier Groups
Pack Quantity
1
Weight
4.8 oz
Primary Use / Application
AR-15 Bolt Upgrade
Platform Compatibility
AR-15
Caliber Compatibility
5.56 NATO/.223 Rem
Material
9310 Steel
Finish / Coating
Nib-X
Configuration
Bolt Assembly
Barrel Length Compatibility
AR-15 Standard
Included Components
Bolt Assembly

Related searches

Compare Similar Products

Attribute You're viewing
WMD Guns Bolt Assembly for AR-15 5.56 NATO/.223 – NiB-X Finish (1-NIBXBA556)
WMD Guns Bolt Assembly for AR-15 5.56 NATO/.223 – NiB-X Finish (1-NIBXBA556)
WMD Guns Bolt Carrier Group – NiB-X Finish, No Hammer (NIBXBCG-0001)
WMD Guns Bolt Carrier Group – NiB-X Finish, No Hammer (NIBXBCG-0001)
WMD Guns Bolt Carrier Group for .308 DPMS Style – NiB-X Finish, No Hammer (NIBXBCG308)
WMD Guns Bolt Carrier Group for .308 DPMS Style – NiB-X Finish, No Hammer (NIBXBCG308)
Price$76.61$172.55$257.53
Primary Use / ApplicationAR-15 Bolt UpgradeAR Bolt Carrier.308 Bolt Carrier
Platform CompatibilityAR-15AR-15DPMS AR-10
Material9310 Steel8620 & 9310 Steel8620 & 9130 Steel
Finish / CoatingNib-XNib-XNib-X
Caliber Compatibility5.56 NATO/.223 Rem5.56 NATO/.223 Rem.308 Win
ConfigurationBolt AssemblyBCG No HammerBCG No Hammer

Featured offers

Volume pricing for business and agency buyers, plus free ground shipping on most continental U.S. orders.

Business & agency accounts

Bulk discounts

Volume pricing, dedicated account management, ACH payment options, and special sourcing for businesses, agencies, law enforcement, and first responders.

Register an account
Every contiguous U.S. order

Free ground shipping

No minimum. Orders ship within one business day of payment and verification, and eligible orders can be upgraded to as fast as next-day at checkout.

See shipping details

Customer reviews

No reviews yet This product hasn't been reviewed. If you've used it, your write-up helps the next buyer.

Write a review

New gear, restocks, and member pricing

One email a week. Product drops, price changes on items you follow, and business-account offers.

Unsubscribe any time. We don't sell your address.