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Posted: 4/30/2017 11:36:46 AM EDT
[#1]
Lack of interest.
Like this thread. 
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Posted: 4/30/2017 12:00:28 PM EDT
[#2]
I've had it in mind for a while, and i think it would be cool for my SBR. Thanks a lot, OP. Now I have to go spend more money.
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Posted: 4/30/2017 12:57:10 PM EDT
[#3]
Defeats the purpose
The ps90 is a short, handy design The ar57 is a long, top-heavy, slow handling design with much less f/lb than 223 The 5.7 is a great round for the ps90 No real point in an AR15 other then less noise |
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Posted: 4/30/2017 1:59:15 PM EDT
[#4]
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Posted: 4/30/2017 3:50:28 PM EDT
[#5]
I used to work with a guy who had one for a while. In his opinion, it was too expensive for what it provided so he sold it.
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Posted: 4/30/2017 4:40:27 PM EDT
[#6]
I liked my AR15 carbine upper but I sold it after the last ammo crunch since I had to many calibers to feed. The upper worked great but loading was awkward and it was pretty heavy considering the round it used. Fun toy, nothing more.
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Posted: 4/30/2017 9:05:21 PM EDT
[#7]
If it was feasible to load 5.7 in bulk on a progressive press (without tons of fumbling), then I'd have an AR57 upper. Sadly, it ain't.
The 5.7 has a case head similar to the .25 Auto case. That means it takes a small primer, BUT the overall head isn't that much larger than a large primer. I've done some manual testing on my Hornady LnL AP, and 5.7 cases seemed to "wander" all over the place over the spent primer hole. Also, to get a compatible shell plate, you have to order it as a custom piece from Hornady (something like $120 +$30 shipping), which cooled my enthusiasm pretty quickly. And of course the brass has a particular coating that helps it feed in P90 magazines. Normal brass prep, like tumbling cases, can remove the coating. No telling what would happen after that. It's sad, because the 5.7 has potential to be a fun round. |
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Posted: 5/1/2017 9:51:27 PM EDT
[#8]
I always wanted one just because it would be fun on an sbr lower with 22 sparrow suppressor. It's cool you can make a brass catcher out of an old mag, and it's just a cool round.
But it never has made it very far up my list of stuff to buy just for fun for some reason. I guess ammo cost is a factor and the fact that you can't hardly find one. |
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Posted: 5/2/2017 6:44:53 AM EDT
[#9]
Bought it when it first came out, still plenty of grins at the range
 Haven't figured out how to adapt a folding Law Tac folding mechanism in it yet.
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Posted: 5/2/2017 8:22:09 AM EDT
[#10]
I don't own a PS90 or anything in 5.7 but I always liked the concept of the AR57, 50 rounds in a compact package, brass dumps out the bottom and you can hollow out a mag and use it as a brass catcher.
I can't remember reading any negative reports on the AR57 uppers, and when I started building pistol ARs I had thought about an AR57 pistol. I think SGAmmo has Federal 5.7 for 38 cents a pop, considering .22wmr is around 30 cents that's not unreasonable. Not as cheap as Wolf Gold, but what is? But not many other options for 5.7 in other firearms, and they're all expensive. An FN 5.7 pistol MSRP is $1300. Excel Arms are cheap, but reviews are terrible. |
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Posted: 5/2/2017 5:22:18 PM EDT
[#11]
I had the carbine length AR57 upper for a while. It was very accurate and very reliable with either AR57 or FN brand magazines. It had the same recoil as my 22 rimfire upper. While it was a fun upper to have, I had no need for it since I have a 22lr upper along with standard 5.56 uppers and a 6.8 upper.
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Posted: 5/3/2017 1:11:09 PM EDT
[#12]
Quote HistoryQuoted:
If it was feasible to load 5.7 in bulk on a progressive press (without tons of fumbling), then I'd have an AR57 upper. Sadly, it ain't. |
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Posted: 5/3/2017 1:54:12 PM EDT
[#13]
Gimmick round for civilians.
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Posted: 5/3/2017 7:53:12 PM EDT
[#14]
Quote HistoryQuoted:
Yeah it is. I load 5.7 on my Dillon 550... saves a metric shit-ton of money. Once you get your press set up, it's not noticeably different than any other caliber (Not entirely true... I wash the brass, I don't polish it). I've loaded some cases 3-4 times...as long as they keep working (I shoot it in a Ps90), I'll keep reloading it. Quote HistoryQuoted:
Quoted:
If it was feasible to load 5.7 in bulk on a progressive press (without tons of fumbling), then I'd have an AR57 upper. Sadly, it ain't. I run through with a universal decapping die and the Swage-it on once fired brass on the first pass. With primer removed I wash in hot water and hand agitation to get the big chunks of carbon and junk off, then on to a towel to dry overnight. Next pass is with lanolin spray lube for cheap bastards and into the Lee full length resizing die before a 20min ride in the dry crushed corn cob tumbler. I trim on a powered RCBS Trim-Pro 2 Next I prime, charge with a manually operated RCBS powder thrower and seat with a Lee seating die. I do handle the brass one more time than I do with .223, and don't have a case activated powder dispenser, but it's definitely faster than single stage, Dillon 600 swaging tool, and a Lee Zip Trim like I did for my first few hundred rounds. Might not do all of this but 1. I'm a reloader, 2. My handloads get 200fps more than the factory FNH rounds with 40gr VMAX, and 3. I'm a reloader. ETA: I looked into an AR57 upper, but they never offered a full auto bolt and I refused to not run this on my M16 so I just have my chopped PS90 
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Posted: 5/3/2017 8:12:25 PM EDT
[#15]
Quote HistoryQuoted:
Lack of interest. Like this thread. 
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Posted: 5/3/2017 10:09:36 PM EDT
[#16]
Quote HistoryQuoted:
Yeah it is. I load 5.7 on my Dillon 550... saves a metric shit-ton of money. Once you get your press set up, it's not noticeably different than any other caliber (Not entirely true... I wash the brass, I don't polish it). I've loaded some cases 3-4 times...as long as they keep working (I shoot it in a Ps90), I'll keep reloading it. |
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Posted: 5/4/2017 6:06:05 AM EDT
[#17]
Quote HistoryQuoted:
How do you keep the cases from snagging on the spent primer drain hole in the press? I had investigated hand depriming (I do that with all my brass anyway), but I still saw the cases catch on the drain hole as the press tried to advance them. Of course I was not using a 5.7 shell plate, which may provide enough support to stabilize the cases, but those tiny rims always seemed to catch on the larger than 0.210" primer drain hole. I can't see how the press base plate would support the cases during sizing... ETA: can't make the link hot on my iPad for some reason, sorry. |
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Posted: 5/4/2017 8:15:51 AM EDT
[#18]
Quote HistoryQuoted: http://www.eliteammunition.com/5-7x28-dillion-550-shell-plate.html
ETA: can't make the link hot on my iPad for some reason, sorry. |
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Posted: 5/4/2017 4:01:56 PM EDT
[#19]
For what it is, I always thought that upper cost way too much.
As for that round, I'd love to see it in a bolt action. It'd be a great reloadable 22wmr replacement if rimfire ammo became hard to find again. |
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Posted: 5/4/2017 4:20:45 PM EDT
[#20]
.22" TCM is available in a bolt action.
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Posted: 5/4/2017 5:08:48 PM EDT
[#21]
Quote HistoryQuoted:
http://www.eliteammunition.com/5-7x28-dillion-550-shell-plate.html ETA: can't make the link hot on my iPad for some reason, sorry. 
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Posted: 5/4/2017 6:13:41 PM EDT
[#22]
Quote HistoryQuoted:
.22" TCM is available in a bolt action. |
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Posted: 5/4/2017 7:25:49 PM EDT
[#23]
Quote HistoryQuoted:
Too bad they don't do a shell plate for Hornday. I might have had to buy a new set of dies... Quote HistoryQuoted:
Quoted:
http://www.eliteammunition.com/5-7x28-dillion-550-shell-plate.html ETA: can't make the link hot on my iPad for some reason, sorry. Might be worth an email to verify. |
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Posted: 5/4/2017 8:10:52 PM EDT
[#24]
Quote HistoryQuoted:
I honestly belive they do/did, but haven't paid much attention to EA since getting my 550 shellplate a few years ago. Might be worth an email to verify. |
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Posted: 5/5/2017 3:15:41 PM EDT
[#25]
Even though I have a Dillon 1050 I wouldn't load 5.7X28 if I could get a shell plate.
The round is safe if properly loaded but at 50,000 c.u.p. in a TINY casing I don't want to be throwing powder charges with a measure. IMHO, every charge in a 5.7X28 load should be weighed unless you are shooting extremely light loads. |
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Posted: 5/5/2017 3:17:14 PM EDT
[#26]
Quote HistoryQuoted:
Too bad they don't do a shell plate for Hornday. I might have had to buy a new set of dies... |
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Posted: 5/5/2017 8:47:40 PM EDT
[#27]
Quote HistoryQuoted:
Hornady HAS offered shell plates before. You might give them a call. |
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Posted: 5/6/2017 1:10:27 PM EDT
[#28]
Quote HistoryQuoted:
Even though I have a Dillon 1050 I wouldn't load 5.7X28 if I could get a shell plate. The round is safe if properly loaded but at 50,000 c.u.p. in a TINY casing I don't want to be throwing powder charges with a measure. IMHO, every charge in a 5.7X28 load should be weighed unless you are shooting extremely light loads. Totally agree with your idea if I were loading on the ragged edge though. |
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Posted: 5/12/2017 1:02:04 PM EDT
[#29]
Way, way back, when we invented the Ar57 we meant for it to be a plinker and cost around $350 retail. Of course it had a different manufacturing method and looked much more like the below rifle. I had a hard time with it priced at $750+
We currently have nothing to do with the company selling/sold them now. We have no plans to make more of them either. BTW the below design came in a lot lighter than the commercial unit. 
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Posted: 5/12/2017 3:16:04 PM EDT
[#30]
Quote HistoryQuoted:
Way, way back, when we invented the Ar57 we meant for it to be a plinker and cost around $350 retail. Of course it had a different manufacturing method and looked much more like the below rifle. I had a hard time with it priced at $750+ We currently have nothing to do with the company selling/sold them now. We have no plans to make more of them either. BTW the below design came in a lot lighter than the commercial unit. http://www.troupsystems.com/ar57%20pics/57shorty.jpg |
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Posted: 5/13/2017 7:52:32 AM EDT
[#31]
Quote HistoryQuoted:
That looks 100% better than the "RAILS EVERYWHERE" abomination it became. |
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Posted: 5/14/2017 7:42:46 AM EDT
[#32]
Quote HistoryQuoted:
Way, way back, when we invented the Ar57 we meant for it to be a plinker and cost around $350 retail. Of course it had a different manufacturing method and looked much more like the below rifle. I had a hard time with it priced at $750+ We currently have nothing to do with the company selling/sold them now. We have no plans to make more of them either. BTW the below design came in a lot lighter than the commercial unit. http://www.troupsystems.com/ar57%20pics/57shorty.jpg |
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