My preference is the forged slick side uppers. They're strong and lightweight. It's easy to mill the slot for the charging handle on whatever side you prefer.
Spike's Tactical AR-15 Slick Side Upper Receiver - Forged M4 Flat Top (Multi Cal)
Spike's Tactical AR-15 Slick Side Upper Receiver - Forged M4 Flat Top (Multi Cal)www.joeboboutfitters.com
You are in a safe space, with likeminded individuals. I spent an hour drilling holes in a saw last week to save 0.6ounces.
The spikes seems to occupy the sweet spot in weight vs preformance. The Fostech is magnesium, which really likes to corrode, especially when there's a chance for galvanic situations, like where the barrel, barrel nut and reciver all meet up. And the polymer ones that are lighter than the spikes, I'd question long term durability cutting a side charging slot in.My preference is the forged slick side uppers. They're strong and lightweight. It's easy to mill the slot for the charging handle on whatever side you prefer.
Spike's Tactical AR-15 Slick Side Upper Receiver - Forged M4 Flat Top (Multi Cal)
Spike's Tactical AR-15 Slick Side Upper Receiver - Forged M4 Flat Top (Multi Cal)www.joeboboutfitters.com
If not set up to load 6x45, would you suggest 6arc over the x45?
Depends what you plan to do with it, how far you shoot, and how strong you are for manually cycling a 6mm ARC. A .300 BLK, .350 Legend, or maybe even 6.8 SPC might work better.
I don't know my metal properties... how does the magnesium/aluminum alloy aspect play into the corrosion problem vs straight magnesium?
I'm new to the manual ar game. As long as you have proper case sizing, and not running hot powder charges, extraction should be same as 556 or 6x45 no? Does the shorter case body result in greater stripping forces to load the next round into chamber? I'd like to have lower expansion velocity to 500y or so with 77tmk or 95tmk in 22arc or 6arc.
It's been awhile since I pulled any galvanic charts, but any time magnesium gets involved it like to corrode. Their exact alloy isn't disclosed, it's probably less of a deal than I'm making, but I personally avoid magnesium things after having to work with magnesium in a work setting.
It does make me curious though... several popular magnesium chassis on the market like xlr element and MDT hnt26. Wonder if there have been issues.
Great job and very practical weight. I think that this is a good example that one doesn't have to pull out every stop to build a very lightweight, very practical rifle...all without breaking the bank.
From what I've read anyway, ounce for ounce, forged is the strongest route, which probably means forged could also be the lightest (7075) option(?).My preference is the forged slick side uppers. They're strong and lightweight. It's easy to mill the slot for the charging handle on whatever side you prefer.
Spike's Tactical AR-15 Slick Side Upper Receiver - Forged M4 Flat Top (Multi Cal)
Spike's Tactical AR-15 Slick Side Upper Receiver - Forged M4 Flat Top (Multi Cal)www.joeboboutfitters.com
Does it work well being that short? Would probably help a little in keeping it from bumping your side when slung on your right shoulder.
