This 556 bolt assembly from American Built Arms Company is built to Mil-Spec dimensions and designed for a long lifetime of use. For superior reliability, these Bolt Carrier Groups feature a nickel boron coated bolt and extractor, each crafted from heat-treated steel. A nickel boron coated bolt assembly has reduced friction and requires less maintenance than standard assemblies. Drop this AB Arms 5.56 bolt assembly into your AR-15 to guarantee your rifle will perform when it matters most. Specifications for American Built Arms Company Pro 5.56mm Bolt Assembly: Manufacturer: American Built Arms Company Color: Silver/Black Finish: Nickel-Boron Gun Model: AR-15 Features of AB Arms Company Mil-Spec 5.56 Bolt Assembly: Bolt: 9310 Steel 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 Package Contents: American Built Arms Company Pro 556 Bolt Assembly – Nickel Boron Coated
2 reviews for American Built Arms Company Pro 5.56mm Bolt Assembly
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American Built Arms Company Pro 5.56 Bolt Carrier, Nickel Boron, Mil-Spec
Dave E –
This company makes high quality AR15 products. This bolt worked flawlessly in my 5.56 carbine. The extra benefit is all made in the USA. Optics Planet had a great price so it was easy to choose them for my AR15 bolt.
LetsGoBrandon –
Phenomenal bolt here. Its flawless. Runs really well. Noticable difference from the one i had prior. Finish is pristine. Great quality. Made in America. Id highly recommend grabbing one for a spare or to replace your current of cheaper quality.