Tag: nickel boron

After several years with various Nickel Boron-plated AR-15 components, I am of the opinion that they should still be lubricated just like any other bolt carrier group. It is important to note that I held this opinion even when I had relatively little experience with nickel boron. Nickel boron is a coating used by FailZero on bolt carrier groups and is purported to reduce lubrication requirements - eliminate them, actually, but I'll stop lubricating my weapons when the owners of FailZero plate the internal components of their cars' engines with… Read More

As I posted yesterday, I recently disassembled the Spike's Tactical 5.45x39 upper receiver assembly and checked it for corrosion. I had intended to post more photos last night, and apologize for not doing so when I said I would. As noted, the weapon was very dirty. If you are not familiar with my use of this upper, it is important for you to understand that I have fired over 7500 rounds of corrosive ammunition through it, over a period of a year, without one proper cleaning. The first thing I… Read More

Because I was sent a few different handguards by Rainier Arms recently, I needed to disassemble and reassemble a few upper receiver assemblies. One of those was the 5.45x39 upper sent to me by Spike's Tactical last year. It's seen crate after crate of corrosive surplus ammunition, and has never been properly cleaned. Coincidentally, I had just received a CAT M4 bolt scraper tool from Rainier, and thought I'd see how much carbon it would remove - there will be a separate post on that. But the topic of this… Read More