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Posted: 4/28/2021 10:57:59 AM EDT
[#1]
So it's an AR/MP5 mash-up?? Pretty cool
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Posted: 4/28/2021 11:28:36 AM EDT
[#2]
A client wanted me to design a new 9mm AR carbine and I told him roller delayed blow back is the way to go. He said he just wanted straight blow back and Glock mags which I too told him was dumb.
They have the right idea but using Glock mags are moronic since they are hard to load and malfunction more than 2 position feed magazines. |
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Posted: 4/28/2021 11:46:29 AM EDT
[#3]
Looks like it could be a contender, wonder what MSRP will be.
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Posted: 4/28/2021 11:58:27 AM EDT
[#4]
That thing looks like it would be a lot of fun. Interesting to see msrp on this. I agree not a fan of Glock magazines but I understand why they go with them.
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Posted: 4/28/2021 1:11:56 PM EDT
[#5]
Glock?
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Posted: 4/28/2021 2:57:29 PM EDT
[#6]
I don't want to use Glock mags either. I am hoping I can use my Endomags so I can slap on an M16 lower.....but I'm suspecting that they moved some of the action back and it won't work.
Also not sure if they made the carrier FA capable. |
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Posted: 4/28/2021 10:49:49 PM EDT
[#7]
Quote HistoryYeah they really done fucked up with that one. MP5, Scorp, or MPX mags would have been the way to go. |
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Posted: 4/28/2021 11:16:19 PM EDT
[#8]
Quote HistoryQuoted: Yeah they really done fucked up with that one. MP5, Scorp, or MPX mags would have been the way to go. Ha! No one wants to buy new mags when they have a dozen Glock mags on the shelf - including pre-bans in ban states. MP5 mags are ridiculously expensive; Scorpion & MPX mags haven't been on the market for more than a decade. Is Glock the objectively better mag? No. It is the market choice for consumer 9x19mm PCCs - even Ruger's PCC runs Glock mags. |
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Posted: 4/29/2021 12:22:07 AM EDT
[#9]
Hope they have a hardened steel trunnion in the aluminum upper receiver or they managed to copy the replaceable locking shoulders of the STG58.
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Posted: 4/29/2021 12:50:13 AM EDT
[#10]
Quoted: I've been following this and just saw this video in case any of you haven't seen it. https://www.facebook.com/SteveFosterCompetitiveShooter/videos/346837407021057/ Looks really nice. It’s ridiculous! |
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Posted: 4/29/2021 8:04:21 AM EDT
[#11]
Meh……doesn’t interest me much
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Posted: 4/29/2021 8:20:41 AM EDT
[#12]
Considering the commercial production figures to date from MEAN Arms and Angstad Arms of their respective roller delay firearms, I'm not too excited.
MHO, YMMV, etc. Be well. |
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Posted: 4/29/2021 9:01:27 AM EDT
[#13]
Quote HistoryQuoted: Considering the commercial production figures to date from MEAN Arms and Angstad Arms of their respective roller delay firearms, I'm not too excited. MHO, YMMV, etc. Be well. Yes, sadly. CMMG seems to be the only company capable of bringing a novel, AR-based 9mm, system to market (and it takes a standard AR lower). No standard lower = no care. |
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Posted: 4/29/2021 9:07:06 AM EDT
[#14]
Quoted: A client wanted me to design a new 9mm AR carbine and I told him roller delayed blow back is the way to go. He said he just wanted straight blow back and Glock mags which I too told him was dumb. They have the right idea but using Glock mags are moronic since they are hard to load and malfunction more than 2 position feed magazines. Glock mags have become the standard. From a manufacturers standpoint you can’t ignore that. |
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Posted: 4/29/2021 9:43:21 AM EDT
[#15]
Quote HistoryQuoted: Yes, sadly. CMMG seems to be the only company capable of bringing a novel, AR-based 9mm, system to market (and it takes a standard AR lower). No standard lower = no care. Quote HistoryQuoted: Quoted: Considering the commercial production figures to date from MEAN Arms and Angstad Arms of their respective roller delay firearms, I'm not too excited. MHO, YMMV, etc. Be well. Yes, sadly. CMMG seems to be the only company capable of bringing a novel, AR-based 9mm, system to market (and it takes a standard AR lower). No standard lower = no care. Even worse; the CMMG RDB system, as I understand it, to get the full benefit requires a non-standard, over length ejection port upper. MHO, YMMV, etc. Be well. |
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Posted: 4/29/2021 9:47:38 AM EDT
[#16]
Any non facebook video?
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Posted: 4/29/2021 9:52:07 AM EDT
[#17]
Quote HistoryQuoted: Any non facebook video?  First review.. the new JP rifles JP 5 |
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Posted: 4/29/2021 9:55:40 AM EDT
[#18]
Quote HistoryQuoted: Even worse; the CMMG RDB system, as I understand it, to get the full benefit requires a non-standard, over length ejection port upper. MHO, YMMV, etc. Be well. |
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Posted: 4/29/2021 10:54:08 AM EDT
[#19]
Quote HistoryQuoted: No...it isn't over length. It is a standard length upper. They do recommend it to be larger vertically. (I use a .458 SOCOM upper)....but many people use standard uppers with no issues. I have the upper from CMMG - no issues with mine. |
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Posted: 4/29/2021 11:13:09 AM EDT
[#20]
I like the "ingenuity" of combining the two, but I am so sick of dealing with lockers and checking degree of locking pieces on Mp5s I rarely shoot them. I really wouldn't look forward to dealing with that crap on an ar15 when changing ammo, barrel length, etc.
However, it is cool that they did it. |
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Posted: 4/29/2021 11:21:24 AM EDT
[#21]
Some knowledge in here.... my question is why aren’t Colt 9mm mags the standard?
What doesn’t the Colt do well? |
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Posted: 4/29/2021 11:41:38 AM EDT
[#22]
Quote HistoryQuoted: Some knowledge in here.... my question is why aren’t Colt 9mm mags the standard? What doesn’t the Colt do well? Keep the rounds in the mag when dropped easily load by hand LRBHO is sporadic at best In other words, it's doesn't really do anything well. |
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Posted: 4/29/2021 11:50:44 AM EDT
[#23]
Single feed double stack mags are a poor choice too.
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Posted: 4/29/2021 12:05:41 PM EDT
[#24]
Quote HistoryQuoted: Some knowledge in here.... my question is why aren’t Colt 9mm mags the standard? What doesn’t the Colt do well? Glock mags are a good compromise based on price, availability, popularity and commonality. I would like to see more carbines take the Sig 320 mag. I sold an AR 9 because it used the Colt-style mag. |
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Posted: 4/29/2021 12:06:25 PM EDT
[#25]
Quote HistoryQuoted: Ha! No one wants to buy new mags when they have a dozen Glock mags on the shelf - including pre-bans in ban states. MP5 mags are ridiculously expensive; Scorpion & MPX mags haven't been on the market for more than a decade. Is Glock the objectively better mag? No. It is the market choice for consumer 9x19mm PCCs - even Ruger's PCC runs Glock mags. I find it amazing how many people think that everybody owns a F'n glock 
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Posted: 4/29/2021 12:07:59 PM EDT
[#26]
Quote HistoryQuoted: I don't want to use Glock mags either. I am hoping I can use my Endomags so I can slap on an M16 lower.....but I'm suspecting that they moved some of the action back and it won't work. Also not sure if they made the carrier FA capable. I'm with ya. If it uses a standard lower without modification so I can use my Endo's, I may be interested. If not, movin' on..... |
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Posted: 4/29/2021 12:14:06 PM EDT
[#27]
Quote HistoryCool gamer gun...and cool that they took the time to make it. Hopefully they make some models not geared towards games though. |
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Posted: 4/29/2021 12:34:56 PM EDT
[#28]
Quote HistoryQuoted: Some knowledge in here.... my question is why aren’t Colt 9mm mags the standard? What doesn’t the Colt do well? Fit in pistols. |
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Posted: 4/29/2021 12:42:49 PM EDT
[#29]
Quote HistoryQuoted: I find it amazing how many people think that everybody owns a F'n glock Quote HistoryQuoted: Quoted: Ha! No one wants to buy new mags when they have a dozen Glock mags on the shelf - including pre-bans in ban states. MP5 mags are ridiculously expensive; Scorpion & MPX mags haven't been on the market for more than a decade. Is Glock the objectively better mag? No. It is the market choice for consumer 9x19mm PCCs - even Ruger's PCC runs Glock mags. I find it amazing how many people think that everybody owns a F'n glock You don't have to own a Glock to have Glock mags. Ruger, Mossberg, a dozen AR-9 manufacturers, KelTec - all make guns that take Glock mags. The next most popular 9x19mm mag on the market is likely the Beretta 92 mag. 3rd is probably the Browning HiPower, 4th might be the SIG P226 - based on extant magwells in the US. There were 9x19mm carbines in the 90's that took Beretta magazines. Browning HiPower based on length of production & total # of HiPowers & clones in the US. SIG P226 is boosted by all the Taurui that take that mag, including the DA/SA predecessor the the G2/G3. I suspect total AR-9 production that takes the Colt-cut Uzi mags to be less than the sum total imports of SIG P226 & Taurus G2/G3 & its predecessor. |
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Posted: 4/29/2021 12:50:13 PM EDT
[#30]
Quote HistoryQuoted: No...it isn't over length. It is a standard length upper. They do recommend it to be larger vertically. (I use a .458 SOCOM upper)....but many people use standard uppers with no issues. Quote HistoryQuoted: Quoted: Even worse; the CMMG RDB system, as I understand it, to get the full benefit requires a non-standard, over length ejection port upper. MHO, YMMV, etc. Be well. Thanks for the clarification. I don't use LRBHO and I'm too deep into over 20 Glock mags with the respective adapter, and over 40 unmodified Uzi mags with the respective adapter to consider anything other than the blowback system I've had since 2008 (had the bolt cut for Glock mags in 2017). I have upgraded to using hydraulic buffers and +power recoil springs to mitigate recoil and muzzle flip somewhat. Good enough for recreational shooting which is all I do. MHO, YMMV, etc. Be well. ETA: And I switch uppers between 9mm, .45 ACP, and 5.56 without doing any changes in the lower. |
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Posted: 4/29/2021 2:45:04 PM EDT
[#31]
Quote HistoryQuoted: ETA: And I switch uppers between 9mm, .45 ACP, and 5.56 without doing any changes in the lower. Sounds like you need to change out at least some kind of mag block. |
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Posted: 4/29/2021 2:47:41 PM EDT
[#32]
Quote HistoryQuoted: Some knowledge in here.... my question is why aren't Colt 9mm mags the standard? What doesn't the Colt do well? I have plenty of Glock, UZI and Colt mags and will buy new mags if I must to have a delayed blowback 9mm setup that will work with a RR or RDIAS.....which I did when the CMMG came out. Initially used their Glock lower then switched to Endomags. |
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Posted: 4/29/2021 3:26:19 PM EDT
[#33]
Quote HistoryQuoted: How are you doing no changes in the lower when switching between 5.56 and 9mm and .45ACP? I thought you were using Glock and UZI mags. Not sure what you are doing for .45ACP. Sounds like you need to change out at least some kind of mag block. Says the guy running Endomags, lol. |
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Posted: 4/29/2021 4:26:45 PM EDT
[#34]
Quote HistoryQuoted: How are you doing no changes in the lower when switching between 5.56 and 9mm and .45ACP? I thought you were using Glock and UZI mags. Not sure what you are doing for .45ACP. Sounds like you need to change out at least some kind of mag block. Quote HistoryQuoted: Quoted: ETA: And I switch uppers between 9mm, .45 ACP, and 5.56 without doing any changes in the lower. Sounds like you need to change out at least some kind of mag block. To clarify, using the same buffer, recoil spring, and no spacer in the buffer tube (aka receiver extension). Push the standard mag release button for magwell swaps for the Uzi and the Glock mags; Oly Arms mags (and upper) for .45 ACP. So no changes to the lower components, per se. MHO, YMMV, etc. Be well. |
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Posted: 4/29/2021 4:28:35 PM EDT
[#35]
Quote HistoryQuoted: To clarify, using the same buffer, recoil spring, and no spacer in the buffer tube (aka receiver extension). Push the standard mag release button for magwell swaps for the Uzi and the Glock mags; Oly Arms mags (and upper) for .45 ACP. So no changes to the lower components, per se. MHO, YMMV, etc. Be well. Quote HistoryQuoted: Quoted: Quoted: ETA: And I switch uppers between 9mm, .45 ACP, and 5.56 without doing any changes in the lower. Sounds like you need to change out at least some kind of mag block. To clarify, using the same buffer, recoil spring, and no spacer in the buffer tube (aka receiver extension). Push the standard mag release button for magwell swaps for the Uzi and the Glock mags; Oly Arms mags (and upper) for .45 ACP. So no changes to the lower components, per se. MHO, YMMV, etc. Be well. |
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Posted: 4/29/2021 4:32:27 PM EDT
[#36]
Quote HistoryQuoted: Says the guy running Endomags, lol. Quote HistoryQuoted: Quoted: How are you doing no changes in the lower when switching between 5.56 and 9mm and .45ACP? I thought you were using Glock and UZI mags. Not sure what you are doing for .45ACP. Sounds like you need to change out at least some kind of mag block. Says the guy running Endomags, lol. |
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Posted: 4/29/2021 4:59:32 PM EDT
[#37]
Quote HistoryQuoted: That is what I figured...with Endomags, I can make zero changes in my lower when going from 556 to 9mm. Quote HistoryQuoted: Quoted: Quoted: Quoted: ETA: And I switch uppers between 9mm, .45 ACP, and 5.56 without doing any changes in the lower. Sounds like you need to change out at least some kind of mag block. To clarify, using the same buffer, recoil spring, and no spacer in the buffer tube (aka receiver extension). Push the standard mag release button for magwell swaps for the Uzi and the Glock mags; Oly Arms mags (and upper) for .45 ACP. So no changes to the lower components, per se. MHO, YMMV, etc. Be well. The difference in the manual of arms (because of the mag release location change and lack of 9mm LRBHO) when using magwell adapters seems to be the thing most disconcerting to new users. I often stretch an o-ring over the standard mag release button to prevent inadvertent magwell dropping. The Oly mags do activate the LRBHO most of the time, but not 100%. As a casual, recreational shooter with a huge stack of legacy 9mm mags, the upgrades to get 100% commonality aren't worth it. |
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Posted: 4/29/2021 5:00:54 PM EDT
[#38]
Needs a forward charging handle and some slap action. Or at least a side charger. Get rid of that damn AR sling shot charging handle.
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Posted: 4/29/2021 6:51:51 PM EDT
[#39]
Quote HistoryQuoted: Needs a forward charging handle and some slap action. Or at least a side charger. Get rid of that damn AR sling shot charging handle. |
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Posted: 4/29/2021 7:10:53 PM EDT
[#40]
I'd like to see the jp5 with cz scorpion mags. Heck I want a mpx that takes scorpion mags. Palmetto did it right when they set the akv to use scorpion mags. Then they released an improved scorpion 35rnd mag at a cheaper price.
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Posted: 4/29/2021 7:57:41 PM EDT
[#41]
I didn't wait for the roller ARs and got a Stribog A3 with an aluminum Scorpion lower, still also want to try CMMG RBG with a Colt lower. The more 9mm options without having to resort to janky Gl**k mags the better, I hope a proper mag roller setup comes out for ARs some day.
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Posted: 4/29/2021 8:45:47 PM EDT
[#42]
Interesting. Years ago somebody here used MP5 parts and built an "AR9". I think it used MP5 magazines too.
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Posted: 4/29/2021 8:52:58 PM EDT
[#43]
So they kept the AR charging handle, BHO and maybe the buffer tube too. The three things that should be changed.
Doesn’t matter, I don’t have any PCC interest anyway. |
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Posted: 4/29/2021 9:23:39 PM EDT
[#44]
Quote HistoryQuoted: Needs a forward charging handle and some slap action. Or at least a side charger. Get rid of that damn AR sling shot charging handle. There is something to be said for familiarity of platform. |
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Posted: 4/29/2021 9:43:01 PM EDT
[#45]
Quote HistoryQuoted: There is something to be said for familiarity of platform. Quote HistoryQuoted: Quoted: Needs a forward charging handle and some slap action. Or at least a side charger. Get rid of that damn AR sling shot charging handle. There is something to be said for familiarity of platform. There's something to be said about how lame AR charging handles are. I understand your point but for most shooters not everything needs to be an AR. |
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Posted: 4/30/2021 5:54:20 AM EDT
[#46]
Quote HistoryQuoted: So they kept the AR charging handle, BHO and maybe the buffer tube too. The three things that should be changed. Doesn't matter, I don't have any PCC interest anyway. I also want LRBHO. Don't mind the CH either. Would like just about any other mag that is double feed. I own zero Scorpion mags but would buy them if this thing was fed by Scorpion mags. |
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Posted: 4/30/2021 6:18:44 AM EDT
[#47]
Quote HistoryQuoted: Interesting. Years ago somebody here used MP5 parts and built an "AR9". I think it used MP5 magazines too.  MP16 upper prototype |
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Posted: 4/30/2021 7:34:02 AM EDT
[#48]
It's JP so it'll run well and be well thought out.
It may also cost a trillion dollars. I want one. |
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Posted: 4/30/2021 10:33:07 AM EDT
[#49]
Quote HistoryQuoted: There's something to be said about how lame AR charging handles are. I understand your point but for most shooters not everything needs to be an AR. And then there are Scorpion, SP5, Stribog, etc, etc, etc  |
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Posted: 4/30/2021 4:36:35 PM EDT
[#50]
Quote HistoryQuoted: I'm probably in the minority but I want the buffer tube so I can tune the cyclic rate by using different buffers and springs... I want the buffer tube so that I can de-tune the recoil system so that it can handle 9mm, .45 ACP, 5.56 and formerly 7.62x39. Operational for all, most likely optimal for none; but simple - no 'this for that and those for the other' parts to keep track of. But I do have an OA-93 upper that I only use on a buffer tubeless AR-15 pistol lower, which I also use with a 4.5" bbl. .22LR upper. So maybe I suffer from cognitive dissonance. MHO, YMMV, etc. |
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