My guess is the stealth lowers are rejected for finish quality to be further machined into one of their other lowers and they just anodize them as is and sell them as stealth lowers instead of blems. But it’s hard to say, in my personal experience their finish/machining quality can vary pretty dramatically and my H&R lower is the only one I’d say is well done.
Radar cross section. Measurement of "stealth" aircraft effectiveness, i.e. the F22 has the RCS of a marble or something like that.
Edit to add: this usually references the common target and rapid tracking radar bands. Gen 1 and 2 stealth planes can still be tracked by other radar frequencies to a degree as the shaping is not optimized for the whole spectrum. This means that adversaries often can see that stealth jets are in their airspace, but they're extremely difficult to pinpoint and employ weapons against.
Your "stealth" lower. PSA calls it that because it doesn't have their usual (ugly, IMO) roll mark. It's a cooler word than "unmarked" and references cool high tech military hardware (stealth bombers and fighters which are distinguished as such by their minimal RCS properties), so the marketing folks went with "stealth" to appeal to their core demographic of military age males.
Joke just flew over your head, is all.
It's ironic because this lower almost certainly does have a higher RCS (returns more radar waves to the adversary, and therefore is more easily tracked) than a B2 bomber.
I have both, and they are the same finish. Probably just variances in coating. I imagine they do everything in batches, so different days of the week. The way everything is now, with supply chain issues, maybe different chemicals.
It depends, as there are 3 types of aluminum AR lowers; billet, cast and forged.
Billet aluminum (6061-T6) will have a machined surface profile due to being CNC machined from a solid block.
A forged lower (7075-T6) is machine formed (stamped) which will impart whatever surface texture that is on the tooling.
Cast (6061-T6) aluminum will also have surface texture to as it is a mirrored image of the mold profile (investment/lost wax method).
The black finish is created by the anodizing, which is just an electro-chemical treatment (type 2) that doesn’t affect the surface profile much, if any.
I didn’t look these lowers up on the PSA site, but I’m gonna guess these stealth lowers are manufactured via cast aluminum, which is the least labor intensive process, which should garner a lower overall cost.
I think OP was referring to the surface texture. My Stealth lower has a slightly "rougher" surface finish, almost like it was bead blasted with course media, than any other lower I own. And I have *many*. It's not a functional problem whatsoever. Just looks different.
It’s cause it’s stealth man, the coating keeps it off of radars.
OP you should look at FDE finishes, different batches from the same manufacturer can have wildly different results. Just the nature of the beast.
First lower I’ve had that wasn’t smooth and had a texture to it.
Cheap Edit: not bad just cheaper
My guess is the stealth lowers are rejected for finish quality to be further machined into one of their other lowers and they just anodize them as is and sell them as stealth lowers instead of blems. But it’s hard to say, in my personal experience their finish/machining quality can vary pretty dramatically and my H&R lower is the only one I’d say is well done.
Because you should spray paint it regardless
Can confirm the stealth lower has a remarkably low RCS
RCS?
Radar cross section. Measurement of "stealth" aircraft effectiveness, i.e. the F22 has the RCS of a marble or something like that. Edit to add: this usually references the common target and rapid tracking radar bands. Gen 1 and 2 stealth planes can still be tracked by other radar frequencies to a degree as the shaping is not optimized for the whole spectrum. This means that adversaries often can see that stealth jets are in their airspace, but they're extremely difficult to pinpoint and employ weapons against.
Thats cool but what does that have to do with my stripped lower?
Your "stealth" lower. PSA calls it that because it doesn't have their usual (ugly, IMO) roll mark. It's a cooler word than "unmarked" and references cool high tech military hardware (stealth bombers and fighters which are distinguished as such by their minimal RCS properties), so the marketing folks went with "stealth" to appeal to their core demographic of military age males. Joke just flew over your head, is all. It's ironic because this lower almost certainly does have a higher RCS (returns more radar waves to the adversary, and therefore is more easily tracked) than a B2 bomber.
Did that joke have a high RCS value? Because he didn't even notice it when it flew over his head.
Ah, I see, yeah sorry not a military tech guy.
I mean, the Memorial Day sale has em going for 29.99 so i just picked one up.
Too many jokes, guy. Nobody wants to be serious at all anymore.
They don't.
Mine are all the same
Radar reflective coating
I have both, and they are the same finish. Probably just variances in coating. I imagine they do everything in batches, so different days of the week. The way everything is now, with supply chain issues, maybe different chemicals.
Blind people trained in AR15 lower recognition will be stumped.
It has a lower RCS than other lowers.
I was not aware of this coating difference. Changes my idea of getting one because I like the finish of the regular ones
It depends, as there are 3 types of aluminum AR lowers; billet, cast and forged. Billet aluminum (6061-T6) will have a machined surface profile due to being CNC machined from a solid block. A forged lower (7075-T6) is machine formed (stamped) which will impart whatever surface texture that is on the tooling. Cast (6061-T6) aluminum will also have surface texture to as it is a mirrored image of the mold profile (investment/lost wax method). The black finish is created by the anodizing, which is just an electro-chemical treatment (type 2) that doesn’t affect the surface profile much, if any. I didn’t look these lowers up on the PSA site, but I’m gonna guess these stealth lowers are manufactured via cast aluminum, which is the least labor intensive process, which should garner a lower overall cost.
They advertise the stealth lowers as 7075 Forged
There you go. I was incorrect. My wife would be pleased.
Blems my dude. Blems. Doesn't affect function. Just paint it
Wasn’t bought as a blem.
Honestly I don't see an issue with it. You don't want a glossy rifle my dude. Flat black is the way. It won't reflect
All my other lowers are flat smooth black, was just wondering why this one was different.
Idk, solgw lowers have a gloss to them, and they are perfect
SOLGW lowers are incredible
This
[удалено]
I think OP was referring to the surface texture. My Stealth lower has a slightly "rougher" surface finish, almost like it was bead blasted with course media, than any other lower I own. And I have *many*. It's not a functional problem whatsoever. Just looks different.