http://aresarmor.com/store/Item/nickel_boron_bolt_carrier_groupI picked up one of these Nickel Boron coated bolt carrier groups from Ares Armor this past week. This BCG is a fantastic buy for the money! I noticed they upped the price to $129.00, (which is still a great buy considering the quality & workmanship). When I bought they had a "Black Friday" type of deal on them for just $89.00.
The quality on these BCG's is outstanding. The finish is very evenly applied, and it is applied correctly. (Read how in the description). It is made to full Mil-Spec, and is a full size M-16 BCG. You can feel the natural lubricity, and the slickness of the NiB coating when you handle it. I'm going to pick up a few more of them for spares, and to replace the AR-15 BCG's in my Bushmasters. These things can go for up to $225.00, so even at $129.00 they're a terrific buy. At $89.00 you're stealing it. They also have them in Phosphate and Black Nitride finish as well for those who like a more traditional looking BCG. These things are shipped dry, and once you put a little lube on them, it's unbelievable how slick they run. I found this on You Tube. It gives a little better look.