A*B Arms Pro 5.56 Bolt Assembly - Nickel Boron - ABA5.56B
$99.99
Out of stock
American Built Arms Nickel Boron 5.56mm Bolt Assembly. Made in the USA to Mil-Spec dimensions, this C-158 steel bolt features a Nickel Boron coating. This bolt assembly is ready to drop in your bolt carrier group of your AR-15 style rifle. This high quality component is great for your .223 Remington/5.56x45mm build, or for upgrading your factory components.
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. These Bolts 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. This has won them contracts with some of the highest quality AR manufacturers in the business. Proudly made in the USA!
Bolt
- Carpenter 158 Steel
- Heat treated per Mil-Spec Requirements
- Shot Peened per Mil-Spec Requirements
- MPI Tested Material
- Nickel Boron Coated
- Aircraft Quality E4140 Steel
- Heat treated per Mil-Spec Requirements
- Shot Peened per Mil-Spec Requirements
- Nickel Boron coated
Manufacturer:Â American Built Arms Company
PRODUCT SPECIFICATIONS:
- Brand:Â American Built Arms Company
- Caliber:.223 Rem,5.56x45mm
- Finish / Color:Â Nickel
- Firearm Type:Â Pistol,Rifle
- Material:Â Steel
- Models Fit:Â AR-15
| Weight | 1.5 oz |
|---|---|
| Dimensions | 2.8 × 1.2 × 1 in |
| MPN | ABA5.56B |
| UPC | 859143003436 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
Customer Reviews
- Reviews
- Questions
- bolt
- SR-556
- value
- part
- price
- notch
USRELIABLE WITH HIGH QUALITY.
Needed this part to replace the Assembly in my SR-556. It has been having extraction issues since I bought it. Installed the assembly in the bolt and it worked flawlessly.
US
5.56 bolt
functions great
USAwesome service and delivery
Great fit and finish. Everything as promised. Will purchase from AR15 again.
USHigh End
This bolt is too notch. Very happy to have made this purchase.
USA*B Arms Pro 5.56 Bolt Assembly - Nickel Boron
Haven't used it yet, but I am a big fan of Nickel Boron bolts so I imagine it will work great. One point of concern I had was that the extractor was not coated with Manganese Phosphate as advertised but instead Nickel Boron like the rest of the bolt assembly. I will have to see if this affects extractions. But that is an easy fix if its a problem.
