Description
RISE Armament AR-15/M16 Bolt Carrier Group .223/5.56 (RA-1011) – Nickel Boron
The RISE Armament RA-1011 AR-15/M16 Bolt Carrier Group .223/5.56 with Nickel Boron finish is manufactured with precision and individually inspected to ensure high-level performance. The easy-to-clean polished nickel boron finish offers unmatched strength with each pull of the trigger and reduces friction while improving overall performance.
So why is nickel boron so great? For that, here’s a little science. Nickel boron (NiB) is a columnar-formed compound. It’s about 95 percent nickel and 5 percent boron. Due to its formation, it reduces contact points between surfaces. However, it still provides an additional layer of hardness to the steel. Because of the reduced surface contact—given only the rounded ends of the NiB column’s touch—it acts almost like a lubricant.
What does this all mean as it relates to our nickel boron bolt carrier group? Compared to standard chrome, nickel boron provides more resistance to wear and corrosion; that’s important because it means you get a bolt carrier group built to last much longer than anything else you’ll find on the market. Longevity is exactly what you want from your bolt carrier group. The end result from our work is an 11.6-ounce bolt carrier group that we’ve tested every possible way to withstand whatever you throw at it. In case you were wondering, here’s a look at exactly what makes up our nickel boron BCG.
Mfr Part: RA-1011-SLVR
Color: Silver
Carrier Finish: Nickel Boron
Bolt Finish: Nickel Boron
Carrier Material: 8620 Steel
Bolt Material: 9310 Steel
Weight: 11.5 oz
Gas Key: Mil-Spec Grade 8 attached and staked
Caliber: .223/5.56/300 BLK
Features:
– High-strength and easy-to-clean NiB finish for reduced friction and improved overall performance
– Individually MPI tested
– Bolt made from 9310 steel and MPI tested
– Carrier machined from 8620 heat-treated tool steel and case hardened
– Gas key made from tool steel with grade 8 hardened fasteners and staked properly
– 4140 steel cam pin
– Extractor made from tool steel and shot-peened
Includes:
(1) RA-1011 AR-15 Bolt Carrier Group .223/5.56 – Nickel Boron
