American Built Arms Nickel Boron 5.56mm Bolt Assembly

Description: American Built Arms Nickel Boron 5.56mm Bolt Assembly. Made in the USA to Mil-Spec dimensions, this 9310 steel bolt features a nickel boron coating as well as the E4140 steel extractor. This bolt assembly is ready to drop in your bolt carrier group of your AR-15 platform rifle or pistol chambered in .223 Rem / 5.56x45mm. This high quality component is an ideal choice for your next build and is proudly manufactured from high-quality materials here in the USA.

A*B Arms A*B Pro Bolt Assembly is built to Mil-Spec dimensions. The Nickel Boron coated bolt needs virtually no lube during use. These bolt assemblies are ready to drop into your bolt carrier group and are specially made on high end Swiss machinery to have exacting tolerances and surface finish. A*B Arms is known by rifle manufacturers for manufacturing one of the finest quality bolts and extractors available.

Bolt:

• 9310 Steel Construction
• Heat treated per Mil-Spec Requirements
• Shot Peened per Mil-Spec Requirements
• MPI Tested Material
• Nickel Boron Coated

Extractor:

• Aircraft Quality E4140 Steel
• Heat treated per Mil-Spec Requirements
• Shot Peened per Mil-Spec Requirements
• Nickel Boron Coated

Manufacturer: American Built Arms Company

PRODUCT SPECIFICATIONS:

• Brand: American Built Arms Company
• Caliber: .223 Rem,5.56x45mm,.300 Blackout
• Finish / Color: Nickel
• Firearm Type: Rifle,Pistol
• Material: Steel
• Models Fit: AR-15