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Posted: 11/19/2018 8:13:17 AM EDT
[#1]
I'm a huge, fanatically devoted 5.7x28 fanboi.
What I'd tell you is that its an enthusiasts caliber, not for the casual purchaser. 5.7x28 is a high velocity, low recoil, semi-AP, Pistol Caliber. You know what that really shines in? Pistols. The FN Five Seven is the worlds most advanced handgun, and the joy of firing a such a low recoil, flat shooting, and laser accurate handgun makes the $0.36-$0.50 a round worth it. Out of a carbine, I don't think its worth the money - unless you already have a FN Five Seven, and want a complimentary carbine. If you don't have a Five Seven, its not worth getting into the hassle of 5.7x28 - there's plenty of 9x19 and 5.56 'PDW' platforms out there that are simpler and cheaper to feed. And the main benefit of 5.7x28 - low recoil, high velocity - is wasted in a carbine because carbines have relatively little recoil already. 5.7x28 is made in batches 1-2x a year. Thats when SS197 can be purchased for $0.36 a round. After that initial batch starts to dry up, prices rise steadily until the next batch. The result is that your really have to commit to buying 1000-2000rd cases every time you see the price hit $0.36. And even then, you are left with a pretty meh PCC round. 5.7 is an awesome handgun round, but compared to 5.56, or even some of the 65-90gr +p+ 9x19's from 8" barrels, its much less favorable as a PCC. That said, of your choices? PS90. |
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Posted: 11/19/2018 8:33:37 AM EDT
[#2]
How about all three. The cmmg is my newest one and I think I like it the most. Ar15 Controls and shorter barrel.
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Posted: 11/19/2018 8:45:11 AM EDT
[#3]
Nice collection.
How does it the MK57 sound with the suppressor on it? Still oud from the sonic crack or more like a 22 mag? And where did you get it? I'm looking for a Cerecock version in bronze or other tac-cool color, but all the ones i've seen on GB are black. CMMG does offer them, but the the base price is 150 bucks higher than GB prices then another 150 for the colored versions. |
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Posted: 11/19/2018 12:04:53 PM EDT
[#4]
Quote HistoryQuoted:
Nice collection. How does it the MK57 sound with the suppressor on it? Still oud from the sonic crack or more like a 22 mag? And where did you get it? I'm looking for a Cerecock version in bronze or other tac-cool color, but all the ones i've seen on GB are black. CMMG does offer them, but the the base price is 150 bucks higher than GB prices then another 150 for the colored versions. I ordered it from Grababun. Just get on there notification email list when they show up. They go fast. |
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Posted: 1/3/2019 5:58:55 PM EDT
[#5]
this is the pistol with the sba3 brace. save me one tho.
https://gun.deals/search/apachesolr_search/816422025312 edit: oops, those are probably black. find the upc for the color you like and plug it in there. if you search mk57 on there i think you will see a few diff colors of the tailhook version. |
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Posted: 1/3/2019 6:07:41 PM EDT
[#6]
Get both?
 Attached FileAR57 on top, cut to 7". PS90 SBR on right will probably get a dedicated Saker-K DT soon. The middle is a Spikes Glock 9mm build with 4" 9mm barrel. .300 Blkout is on the bottom. I've also got SBR lowers for the .300 and 5.7. Guess I ought to SBR the Spikes 9mm and put the Maxim stock on it. |
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Posted: 1/3/2019 9:40:48 PM EDT
[#7]
Quote HistoryQuoted:
5.7x28 is a high velocity, low recoil, semi-AP, Pistol Caliber. Quote HistoryQuoted:
5.7x28 is a high velocity, low recoil, semi-AP, Pistol Caliber. You know what that really shines in? Pistols. The FN Five Seven is the worlds most advanced handgun Out of a carbine, I don't think its worth the money - unless you already have a FN Five Seven, and want a complimentary carbine. And the main benefit of 5.7x28 - low recoil, high velocity - is wasted in a carbine because carbines have relatively little recoil already As far as the OP is concerned, an SBR PS90 is in my opinion the best balance between ammunition performance, barrel lengths, and over all length. The real downside to the PS90 is the height of the optics over bore. If overall length is a concern, you could also go with a FiveseveN pistol in a KPOS chassis. You've basically got the same barrel length as the short Banshee pistol with less overall length. Picture is my PS90, next to a 11.5" AR pistol and MP5 for comparison. If you were to SBR the PS90 then put a suppressor on the end it would be almost identical in length to either or the two.  Attached File |
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Posted: 1/3/2019 10:49:54 PM EDT
[#8]
I had a PS90 and liked it.
There's no way I'd get a 5.7 that did not take advantage of the top loading 50 round PS90 mags. PS90 or find an AR57 upper. |
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Posted: 1/3/2019 10:54:41 PM EDT
[#9]
If going 5.7mm it's gotta be the FN P90 carbine or FN FiveSeven pistol. Everything else is just pointless and lame. I mean why shoot a more expensive and less powerful 5.7mm round in an AR15? Go 5.56mm for AR's no doubt about it.
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Posted: 1/3/2019 10:55:41 PM EDT
[#10]
I would have no problem with my P90 riding shotgun by me...
 Attached FileAmmo is somewhat pricey. But SG Ammo or PSA has sales from time to time. Great PDW! |
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Posted: 1/3/2019 11:09:14 PM EDT
[#11]
Quote HistoryQuoted:
If going 5.7mm it's gotta be the FN P90 carbine or FN FiveSeven pistol. Everything else is just pointless and lame. I mean why shoot a more expensive and less powerful 5.7mm round in an AR15? Go 5.56mm for AR's no doubt about it. |
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Posted: 1/4/2019 1:21:09 AM EDT
[#12]
I have kocked sround the idea of doing at least a one off prototype of a Colt MARS clone in 5.7 as it just seems like it would be fun.
Sven Manticore Arms |
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Posted: 1/4/2019 1:48:50 AM EDT
[#13]
Quote HistoryQuoted: I have kocked sround the idea of doing at least a one off prototype of a Colt MARS clone in 5.7 as it just seems like it would be fun.
Sven Manticore Arms |
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Posted: 1/4/2019 12:10:55 PM EDT
[#14]
Quote HistoryQuoted:
Sven, indeed, 5.7x28mm is ideal for a MARS replica - but we can get full power AR-15s down to 4 lbs, so what is the point of a MARS PDW today? The retro folks would go gaga for it, but very few folks would pay for such an astronomical niche clone. Quote HistoryQuoted:
Quoted: I have kocked sround the idea of doing at least a one off prototype of a Colt MARS clone in 5.7 as it just seems like it would be fun.
Sven Manticore Arms Sven Manticore Arms |
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Posted: 1/4/2019 12:46:26 PM EDT
[#15]
I have just about every 5.7 variant you can buy. I have a PS90, two FiveSevens (black and FDE), an AR57 pistol with brace, and a MK57 CMMG pistol with brace. What I love is that I can share magazines between my MK57 and FiveSeven guns, and share magazines between my AR57 and PS90. All of them are great in their own way, but I really like the AR57 and MK57 best.
If I could only have one, I would get the MK57 as it is VERY short, has an extended charging handle and Tailhook mod 2 brace from the factory, and looks great. But you can find AR57s on gunbroker every month. I see them come up for sale pretty regularly in used but like new condition. I swapped out my pistol brace that my AR57 came with for a PDW retractable brace and it is awesome. |
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Posted: 1/4/2019 1:19:21 PM EDT
[#16]
Quote HistoryQuoted: That is exactly why I said a one off prototype, I domt beliebe there is a market for such a thing in the commercial sense, but being that we (Manticore Arms) could make a post sample full auto where the recoil would be vastly more controllable than 5.56x45 it would be fun to habe and shoot and make the retro heads drool ;)
Sven Manticore Arms 
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Posted: 1/4/2019 1:42:46 PM EDT
[#17]
Quote HistoryQuoted:
CMMG Guard, M1 carbine magblock, call it good? Quote HistoryQuoted:
Quoted: That is exactly why I said a one off prototype, I domt beliebe there is a market for such a thing in the commercial sense, but being that we (Manticore Arms) could make a post sample full auto where the recoil would be vastly more controllable than 5.56x45 it would be fun to habe and shoot and make the retro heads drool ;)
Sven Manticore Arms
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Posted: 1/4/2019 4:31:53 PM EDT
[#18]
Quote HistoryQuoted:
I have just about every 5.7 variant you can buy. I have a PS90, two FiveSevens (black and FDE), an AR57 pistol with brace, and a MK57 CMMG pistol with brace. What I love is that I can share magazines between my MK57 and FiveSeven guns, and share magazines between my AR57 and PS90. All of them are great in their own way, but I really like the AR57 and MK57 best. If I could only have one, I would get the MK57 as it is VERY short, has an extended charging handle and Tailhook mod 2 brace from the factory, and looks great. But you can find AR57s on gunbroker every month. I see them come up for sale pretty regularly in used but like new condition. I swapped out my pistol brace that my AR57 came with for a PDW retractable brace and it is awesome. EDIT: I just re-read your post, you put the PDW brace on the AR57. Will it fit the MK57? |
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Posted: 1/4/2019 4:32:53 PM EDT
[#19]
Quote HistoryQuoted:
If I could only have one, I would get the MK57 as it is VERY short, has an extended charging handle and Tailhook mod 2 brace from the factory, and looks great. But you can find AR57s on gunbroker every month. I see them come up for sale pretty regularly in used but like new condition. I swapped out my pistol brace that my AR57 came with for a PDW retractable brace and it is awesome. |
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Posted: 1/4/2019 4:45:40 PM EDT
[#20]
Quote HistoryQuoted:
I mean why shoot a more expensive and less powerful 5.7mm round in an AR15? Go 5.56mm for AR's no doubt about it. |
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Posted: 1/4/2019 4:46:55 PM EDT
[#21]
I myself really like the PS90 as long as one is studying it from the standpoint it was created under and the role it was designed for. CQB weapon for non frontline troops to give better range and power then the pistol. Think todays solution to the M1 Carbine of old.
It’s an excellent cqb weapon that’s got better penetration capabilities than 9mm and half the weight ammo wise. It’s extremely controllable from the PS90 and is very accurate. With the correct ammunition such as 198 it’s also got good ballistics. Theirs a reason Secret Service replaces the Mp5 with the P90 it’s well suited to that type of role. Now keep in mind going into the 5.7 ammo is expensive and it’s not something you can by just anywhere. It can’t stack up ballistics wise to something like the 5.56 but it wasn’t meant to. |
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Posted: 1/4/2019 4:55:18 PM EDT
[#22]
its been about .40/per online for the Federal. .43 for FN Hornady Vmax in bulk. but plenty available. hard to find locally for me. but yeah, def not cheap. and with the low recoil of this round, im sure mags empty fast. when i think of binary on a mk57 i can feel my heart beat in my pants.
theres some good rebates now for federal, im pretty sure the 5.7 is included but dont quote me on that: https://promotions.vistaoutdoor.com/EN/US/Promo/16/101/EntryForm |
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Posted: 1/4/2019 4:58:05 PM EDT
[#23]
I bought most of mine for .28 to .30 from PSA.
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Posted: 1/4/2019 5:01:23 PM EDT
[#24]
Quote HistoryQuoted:
I bought most of mine for .28 to .30 from PSA. |
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Posted: 1/4/2019 5:06:59 PM EDT
[#25]
Quote HistoryQuoted: holy crap. was that a special or normal price? id run up a credit card for that. |
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Posted: 1/4/2019 10:04:22 PM EDT
[#26]
Quote HistoryQuoted:
I would have no problem with my P90 riding shotgun by me... https://www.AR15.Com/media/mediaFiles/249712/FN_PS90-June_2018__1__jpg-795307.JPG Ammo is somewhat pricey. But SG Ammo or PSA has sales from time to time. Great PDW! |
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Posted: 1/5/2019 9:51:30 PM EDT
[#27]
If you’re getting a 5.7 carbine, do it right and get a PS90 and a stamp.
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Posted: 1/5/2019 9:53:42 PM EDT
[#28]
Quote HistoryQuoted:
I would have no problem with my P90 riding shotgun by me... https://www.AR15.Com/media/mediaFiles/249712/FN_PS90-June_2018__1__jpg-795307.JPG Ammo is somewhat pricey. But SG Ammo or PSA has sales from time to time. Great PDW! |
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Posted: 1/6/2019 3:21:58 AM EDT
[#29]
Quote HistoryQuoted:
If you’re getting a 5.7 carbine, do it right and get a PS90 and a stamp. |
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Posted: 1/6/2019 9:12:16 AM EDT
[#30]
Quote HistoryQuoted:
If you’re getting a 5.7 carbine, do it right and get a PS90 and a stamp. |
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Posted: 1/6/2019 1:16:26 PM EDT
[#31]
Quote HistoryQuoted:The CMMG Guard looks a lot more interesting than the P90. Quote HistoryQuoted:The CMMG Guard looks a lot more interesting than the P90. Quoted:I have NFA items already and just not comfortable leaving them in my truck unattended. |
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Posted: 1/6/2019 2:46:16 PM EDT
[#32]
Quote HistoryQuoted:. Wow, never expected that one! One thing the P90 (and F2000) have going for them is they’re interesting! The Guard more “interesting” than a P90 only to someone who wants to stay with the AR15 type platform. 1 - it is delayed blowback, rather than the straight blowback of the P90; 2 - it can be built as a pistol, rifle, or SBR, giving certain legal advantages in some situations; 3 - it shares magazines with existing pistols, making it an ideal candidate for a personal PCC. |
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Posted: 1/6/2019 6:33:29 PM EDT
[#33]
Fair enough. Although, it may be worth mentioning, while not a locked breech, the P90/PS90 barrel moves rearward with the bolt upon firing, opening after chamber pressures have reached a safe level. In addition, with 50 round magazines, magazine changes are needed about half as often and one would need about half as many for the same ammo count. I, for one, couldn’t be happier with my SBR.
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Posted: 1/6/2019 9:25:41 PM EDT
[#34]
Quote HistoryQuoted:
Fair enough. Although, it may be worth mentioning, while not a locked breech, the P90/PS90 barrel moves rearward with the bolt upon firing, opening after chamber pressures have reached a safe level. In addition, with 50 round magazines, magazine changes are needed about half as often and one would need about half as many for the same ammo count. I, for one, couldn’t be happier with my SBR. |
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Posted: 1/6/2019 11:43:57 PM EDT
[#35]
For me it totally depends on what you actually want. For a shooter I would put a short AR57 upper on a sbr lower. For a nifty gun that’s weird and fun the ps90 fills the bill.
People love arguing back and forth extolling virtues of the different platforms but never mention the biggest downfalls which in my opinion are expensive ammo, limited ammo available which is actually effective outside of boutique stuff, lack of full auto. The P90 is awesome to shoot and with the right ammo is a pretty formidable thing. Semi auto with common ammo not so much. |
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Posted: 1/7/2019 12:27:51 AM EDT
[#36]
I have an AR57. It's my TWD gun.
Because of it's design with the long magazine on top it's really not logical to "pistol" it. |
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Posted: 1/7/2019 12:32:47 AM EDT
[#37]
Out of a SMG the 5.7 is worth it in a larger firearm like the P90. I’d just get a FiveSeven and call it a day.
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Posted: 1/7/2019 12:49:52 AM EDT
[#38]
Quote HistoryQuoted:
I have an AR57. It's my TWD gun. Because of it's design with the long magazine on top it's really not logical to "pistol" it. |
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Posted: 1/7/2019 12:54:21 AM EDT
[#39]
Quote HistoryQuoted:
What’s TWD? Quote HistoryQuoted:
Quoted:
I have an AR57. It's my TWD gun. Because of it's design with the long magazine on top it's really not logical to "pistol" it. 50 rds. magazines of 5.7 would be perfect for dealing with zombies. |
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Posted: 1/7/2019 1:15:21 AM EDT
[#40]
Gotcha. Knew I had seen it before but couldn’t place it.
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Posted: 1/7/2019 11:16:18 AM EDT
[#41]
Quote HistoryQuoted: For me it totally depends on what you actually want. For a shooter I would put a short AR57 upper on a sbr lower. For a nifty gun that’s weird and fun the ps90 fills the bill. People love arguing back and forth extolling virtues of the different platforms but never mention the biggest downfalls which in my opinion are expensive ammo, limited ammo available which is actually effective outside of boutique stuff, lack of full auto. The P90 is awesome to shoot and with the right ammo is a pretty formidable thing. Semi auto with common ammo not so much. |
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Posted: 1/12/2019 12:24:05 PM EDT
[#42]
Quote HistoryQuoted:
I have kocked sround the idea of doing at least a one off prototype of a Colt MARS clone in 5.7 as it just seems like it would be fun. Sven Manticore Arms ETA: of course that being said, I'm the same guy who would give his left but for an Mp7 in 5.7. To the point I've started investigating in machine tools to make one. It'll be a one off, and not really an MP7 as It'll have an aluminum receiver. But damn if it won't be a handy little thing. The only problem 5.7 has is too many people think 5.56 is always a better option. I can think of many cases where less power is going to be better. 5.56 out of a sub 10" barrel has too much unburnt powder and muzzle blast. 5.7 on the other hand, not so much. Sure, if I'm shooting coyotes or ISIS at 300 yards, j want 5.56. But if I have to pop a bad guy inside my house, at like maybe 21 feet.... 5.7 will probably do the job just fine and not blow out my ear drums in the process. |
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Posted: 1/12/2019 2:56:22 PM EDT
[#43]
Quote HistoryQuoted: No, the Guard is more interesting b/c of at least 3 reasons other than being based on the AR platform: 1 - it is delayed blowback, rather than the straight blowback of the P90; 2 - it can be built as a pistol, rifle, or SBR, giving certain legal advantages in some situations; 3 - it shares magazines with existing pistols, making it an ideal candidate for a personal PCC. |
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Posted: 1/12/2019 3:01:51 PM EDT
[#44]
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Posted: 1/12/2019 8:43:47 PM EDT
[#45]
Quote HistoryMSRP $799, might be an interesting addition to the collection.
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Posted: 1/12/2019 11:39:43 PM EDT
[#46]
Quote HistoryQuoted:
I have kocked sround the idea of doing at least a one off prototype of a Colt MARS clone in 5.7 as it just seems like it would be fun. Sven Manticore Arms |
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