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New CMMG 5.7x28 M4 Carbine and Drop In Conversion
1/13/2011 1:12:36 PM
All new 5.7x28 M4 carbine and patent pending .22 drop in conversion. Here is a sneak peak at our latest offering for 2011.
- Standard AR15 lower receiver
- Standard A3 upper receiver
- May be converted to shoot low cost .22 ammunition
- Gas deflector
- 30 round magazine
- Blow back operated
- 1:9 twist barrel
- May be upgraded with all AR15/M16 compatible buttstocks, handguards and pistol grips
- Standard 1/2x28 threaded barrel
1/13/2011 1:22:14 PM
COOL I smell a new SBR
1/13/2011 2:26:41 PM
VERY INTERESTING!!!!!
1/13/2011 2:45:41 PM
ost
1/13/2011 2:55:33 PM
Only 30 rounds? If they can put 20 in the FiveSeven, you should be able to get 90 in there.
Also: Shocked, Amazed, Awestruck and so on.
Also: Shocked, Amazed, Awestruck and so on.
1/13/2011 4:54:38 PM
hmmm!
1/13/2011 5:41:28 PM
Originally Posted By Mrmaigo:
Only 30 rounds? If they can put 20 in the FiveSeven, you should be able to get 90 in there.
Also: Shocked, Amazed, Awestruck and so on.
Only 30 rounds? If they can put 20 in the FiveSeven, you should be able to get 90 in there.
Also: Shocked, Amazed, Awestruck and so on.
looks like its single stack.
ETA Is this a barrel/bolt/mag conversion that you also make a .22 conversion for? Thats pretty neat. will you sell barrel/bolt/mag only?
1/13/2011 6:09:42 PM
Originally Posted By slappomatt:
looks like its single stack.
ETA Is this a barrel/bolt/mag conversion that you also make a .22 conversion for? Thats pretty neat. will you sell barrel/bolt/mag only?
Originally Posted By Mrmaigo:
Only 30 rounds? If they can put 20 in the FiveSeven, you should be able to get 90 in there.
Also: Shocked, Amazed, Awestruck and so on.
Only 30 rounds? If they can put 20 in the FiveSeven, you should be able to get 90 in there.
Also: Shocked, Amazed, Awestruck and so on.
looks like its single stack.
ETA Is this a barrel/bolt/mag conversion that you also make a .22 conversion for? Thats pretty neat. will you sell barrel/bolt/mag only?
The .22 conversion is just a bolt and mag replacement. 30 seconds to convert.
1/13/2011 6:15:01 PM
DO WANT!
Now I just need the new Silencero Sparrow...
Now I just need the new Silencero Sparrow...
1/14/2011 3:53:08 AM
Beta magazine for 5.7 coming when?
1/14/2011 3:57:11 AM
My wallet hates me right now.
1/14/2011 5:33:53 AM
With a 1:9 twist barrel I wonder how well the Aguila 2lr SSS ammo would do in that conversion.
1/14/2011 3:09:51 PM
Very interested! When can we find out more details???
1/14/2011 4:50:14 PM
Can I set up somekind of monthly payment plan? You guys are killing me
1/14/2011 8:28:19 PM
Originally Posted By CMMG:
The .22 conversion is just a bolt and mag replacement. 30 seconds to convert.
Originally Posted By slappomatt:
looks like its single stack.
ETA Is this a barrel/bolt/mag conversion that you also make a .22 conversion for? Thats pretty neat. will you sell barrel/bolt/mag only?
Originally Posted By Mrmaigo:
Only 30 rounds? If they can put 20 in the FiveSeven, you should be able to get 90 in there.
Also: Shocked, Amazed, Awestruck and so on.
Only 30 rounds? If they can put 20 in the FiveSeven, you should be able to get 90 in there.
Also: Shocked, Amazed, Awestruck and so on.
looks like its single stack.
ETA Is this a barrel/bolt/mag conversion that you also make a .22 conversion for? Thats pretty neat. will you sell barrel/bolt/mag only?
The .22 conversion is just a bolt and mag replacement. 30 seconds to convert.
sorry I guess it was late when I posted. I was trying to ask if you will be selling the 5.7 conversion parts or only in complete uppers. I was thinking this would be a cool round to chamber my new AR pistol build in.
1/14/2011 8:35:59 PM
Originally Posted By slappomatt:
sorry I guess it was late when I posted. I was trying to ask if you will be selling the 5.7 conversion parts or only in complete uppers. I was thinking this would be a cool round to chamber my new AR pistol build in.
Originally Posted By CMMG:
The .22 conversion is just a bolt and mag replacement. 30 seconds to convert.
Originally Posted By slappomatt:
looks like its single stack.
ETA Is this a barrel/bolt/mag conversion that you also make a .22 conversion for? Thats pretty neat. will you sell barrel/bolt/mag only?
Originally Posted By Mrmaigo:
Only 30 rounds? If they can put 20 in the FiveSeven, you should be able to get 90 in there.
Also: Shocked, Amazed, Awestruck and so on.
Only 30 rounds? If they can put 20 in the FiveSeven, you should be able to get 90 in there.
Also: Shocked, Amazed, Awestruck and so on.
looks like its single stack.
ETA Is this a barrel/bolt/mag conversion that you also make a .22 conversion for? Thats pretty neat. will you sell barrel/bolt/mag only?
The .22 conversion is just a bolt and mag replacement. 30 seconds to convert.
sorry I guess it was late when I posted. I was trying to ask if you will be selling the 5.7 conversion parts or only in complete uppers. I was thinking this would be a cool round to chamber my new AR pistol build in.
Sure. We will have the bolt, barrel and mag all available for individual purchase.
Posted Via AR15.Com Mobile
1/14/2011 8:55:12 PM
Originally Posted By CMMG:
Sure. We will have the bolt, barrel and mag all available for individual purchase.
Posted Via AR15.Com Mobile
Originally Posted By slappomatt:
sorry I guess it was late when I posted. I was trying to ask if you will be selling the 5.7 conversion parts or only in complete uppers. I was thinking this would be a cool round to chamber my new AR pistol build in.
Originally Posted By CMMG:
The .22 conversion is just a bolt and mag replacement. 30 seconds to convert.
Originally Posted By slappomatt:
looks like its single stack.
ETA Is this a barrel/bolt/mag conversion that you also make a .22 conversion for? Thats pretty neat. will you sell barrel/bolt/mag only?
Originally Posted By Mrmaigo:
Only 30 rounds? If they can put 20 in the FiveSeven, you should be able to get 90 in there.
Also: Shocked, Amazed, Awestruck and so on.
Only 30 rounds? If they can put 20 in the FiveSeven, you should be able to get 90 in there.
Also: Shocked, Amazed, Awestruck and so on.
looks like its single stack.
ETA Is this a barrel/bolt/mag conversion that you also make a .22 conversion for? Thats pretty neat. will you sell barrel/bolt/mag only?
The .22 conversion is just a bolt and mag replacement. 30 seconds to convert.
sorry I guess it was late when I posted. I was trying to ask if you will be selling the 5.7 conversion parts or only in complete uppers. I was thinking this would be a cool round to chamber my new AR pistol build in.
Sure. We will have the bolt, barrel and mag all available for individual purchase.
Posted Via AR15.Com Mobile
Looks like it is too new for your site. I was hoping to get some pricing on the individual parts too.
1/14/2011 9:49:48 PM
Looks awesome! I love my 5.7, but I'm not sure why I'd want it for my AR when it cost as much as .223?
1/16/2011 5:30:13 PM
CMMG, PLEASE DO A .22WMR VERSION THAT WE CAN HAVE IN THE UK
PLEASE TAKE ANOTHER LOOK AT YOUR .22WMR PROTOTYPE THAT YOU ALREADY HAVE
5.7X28 IS A GREAT ROUND BUT NOT UK LEGAL AS IT'S A CENTERFIRE
PLEASE TAKE ANOTHER LOOK AT YOUR .22WMR PROTOTYPE THAT YOU ALREADY HAVE
5.7X28 IS A GREAT ROUND BUT NOT UK LEGAL AS IT'S A CENTERFIRE
1/17/2011 2:37:46 AM
what kind of velocity are you getting out of these?
1/17/2011 8:45:05 AM
Originally Posted By AR-fan:
With a 1:9 twist barrel I wonder how well the Aguila 2lr SSS ammo would do in that conversion.
With a 1:9 twist barrel I wonder how well the Aguila 2lr SSS ammo would do in that conversion.
Wondering why CMMG went with the 1/9 twist instead of a slower twist better suited for both rounds.
Wouldn't the 40 gr. load of the 5.7x28 stabilize in a 1/16 twist?
Does not appear you can convert the 5.7x28 upper to a .223 by changing bolts.
1/17/2011 11:46:48 AM
Originally Posted By 223Rem:
Wondering why CMMG went with the 1/9 twist instead of a slower twist better suited for both rounds.
Wouldn't the 40 gr. load of the 5.7x28 stabilize in a 1/16 twist?
Does not appear you can convert the 5.7x28 upper to a .223 by changing bolts.
Originally Posted By AR-fan:
With a 1:9 twist barrel I wonder how well the Aguila 2lr SSS ammo would do in that conversion.
With a 1:9 twist barrel I wonder how well the Aguila 2lr SSS ammo would do in that conversion.
Wondering why CMMG went with the 1/9 twist instead of a slower twist better suited for both rounds.
Wouldn't the 40 gr. load of the 5.7x28 stabilize in a 1/16 twist?
Does not appear you can convert the 5.7x28 upper to a .223 by changing bolts.
John worded the title kind of weird, its a 5.7 upper/rifle and a .22LR conversion for the 5.7 upper.
FN has always used the 1:9 on there 5.7 products, so fix what is not broke.
The 5.7 is a entirely different barrel and bolt assembly than what is used on the .223
1/17/2011 12:12:34 PM
Do you have a ballpark cost for the 5.7 kit? I was just thinking about what I want to build next, now I know
1/17/2011 1:00:59 PM
Originally Posted By peligro113:
Do you have a ballpark cost for the 5.7 kit? I was just thinking about what I want to build next, now I know
Do you have a ballpark cost for the 5.7 kit? I was just thinking about what I want to build next, now I know
My best guess based on our current 9mm parts(the 5.7 bolt is basically a reworked 9mm bolt) would be :
~$200 For the 5.7 Bolt
~$210 for the 5.7 Barrel
I have no idea on the Magazine
1/17/2011 1:08:55 PM
Originally Posted By CMMGinc:
My best guess based on our current 9mm parts(the 5.7 bolt is basically a reworked 9mm bolt) would be :
~$200 For the 5.7 Bolt
~$210 for the 5.7 Barrel
I have no idea on the Magazine
Originally Posted By peligro113:
Do you have a ballpark cost for the 5.7 kit? I was just thinking about what I want to build next, now I know
Do you have a ballpark cost for the 5.7 kit? I was just thinking about what I want to build next, now I know
My best guess based on our current 9mm parts(the 5.7 bolt is basically a reworked 9mm bolt) would be :
~$200 For the 5.7 Bolt
~$210 for the 5.7 Barrel
I have no idea on the Magazine
Got a 5.7 upper and mag that I can flog the hell out of?
1/17/2011 3:34:38 PM
Not being up too much on this caliber, can someone explain me the pros/cons of this, vs the 5.56?
Are you able to put this conversion in a normal AR? (For example one that varies currently between a .22 CMMG kit and 5.56)?
Are you able to put this conversion in a normal AR? (For example one that varies currently between a .22 CMMG kit and 5.56)?
2/4/2011 10:25:24 PM
I like the 5.7mm magazine, any ideas on release date or cost?
2/5/2011 9:25:59 AM
Looks very interesting!
2/17/2011 10:54:41 AM
Does this require the use of a buffer and tube, or is it blowback like the standard 22 cal conversion. one of these with the new Nordic sliding stocks would be cool.
2/17/2011 4:51:52 PM
Originally Posted By ronin70:
Does this require the use of a buffer and tube, or is it blowback like the standard 22 cal conversion. one of these with the new Nordic sliding stocks would be cool.
Does this require the use of a buffer and tube, or is it blowback like the standard 22 cal conversion. one of these with the new Nordic sliding stocks would be cool.
Since the bolt looks like a 9mm bolt it would seem it would require a buffer and spring. The .22 conversion appears to be very similar to a .223 to .22 conversion just with a chamber adapter that mirrors the round the barrel is chambered for.
2/17/2011 5:21:52 PM
It will use a standard buffer and spring. These can be used with different types of buffers to control rate of fire.
2/19/2011 1:38:14 PM
I sure hope you guy's follow through on this 5.7 upper
I've wanted to work with this round for awhile. The other top fed 5.7 upper limits the owners optics choice.
This should be the perfect 150 yard groundhog plinker! I should be able to work up a good load with the little 30gr. Bergers
I'm inline for sure!
I've wanted to work with this round for awhile. The other top fed 5.7 upper limits the owners optics choice.
This should be the perfect 150 yard groundhog plinker! I should be able to work up a good load with the little 30gr. Bergers
I'm inline for sure!
2/26/2011 12:51:56 PM
Any more news so all you will need is a complete upper and mag and use ony reg ar lower, when will these be released and how much?
And will a reg evoultion 22 conversion work with it?
And will a reg evoultion 22 conversion work with it?
2/26/2011 1:41:38 PM
We are making a mod to the mag dies for greater capacity. You can see the pic of the kit on the original post. The only difference is the adapter itself.
2/26/2011 5:28:34 PM
Will both bolts trip an auto sear? Have they been tested in FA?
I am sure they will and I WANT! What is the shortest barrel available?
I am sure they will and I WANT! What is the shortest barrel available?
2/28/2011 10:53:45 AM
20" barrel? Would be interested in buying a varminter. Waiting for the new Savage 5.7 bolt rifle to hit the streets...but I'd get into an upper instead.
2/28/2011 12:02:36 PM
These will run in full auto just fine.
No plans at the moment for anything over a 16"
No plans at the moment for anything over a 16"
3/2/2011 7:55:37 PM
Originally Posted By BravoSector1:
20" barrel? Would be interested in buying a varminter. Waiting for the new Savage 5.7 bolt rifle to hit the streets...but I'd get into an upper instead.
20" barrel? Would be interested in buying a varminter. Waiting for the new Savage 5.7 bolt rifle to hit the streets...but I'd get into an upper instead.
16 inches of barrel will burn all the powder this little case can offer. No need for the extra weight of a 20"
A 16" pencil barrel would fit it to a tee! These should sell well to folk's that need short range varmint control.
Simple blowback operation with a standard flattop where you can use a regular rifle scope instead of the other 5.7 uppers where the magazine is on top.
So you get a little better ballistics than a 17 HMR or 22 magnum semiauto not having to deal with a rimmed case and with the possibility to reload the case for all out accuracy.
That's a win for folk's after fur!
P.S. I would'nt get to long on that magazine or I'd offer lower capacity also.
3/3/2011 10:47:39 PM
what the range like? ? ?
150?
200?
250 meters? ? ?
150?
200?
250 meters? ? ?
3/14/2011 9:37:57 AM
HI, I have the gov't profile hbar 1/7 twist. Any considerations with this?
3/15/2011 1:48:18 AM
I love the 5.7 magazine.
Tell me you're considering a 22-round 6.8 SPC magazine of similar design... loadable to 2.280-300".
Tell me you're considering a 22-round 6.8 SPC magazine of similar design... loadable to 2.280-300".
4/18/2011 6:22:55 PM
Just a Bump!
gotta hold CMMG's feet to the fire on this one. Theres a bit more interest on Hunting Forums on a standard AR upper in 5.7 than here.
Mostly Fox Hunters. 223 is NOT FUR FRIENDLY on this little guy! 22 Hornet and 22 Mag. are choice. Even 223 FMJ busts them up bad depending on the shot!
gotta hold CMMG's feet to the fire on this one. Theres a bit more interest on Hunting Forums on a standard AR upper in 5.7 than here.
Mostly Fox Hunters. 223 is NOT FUR FRIENDLY on this little guy! 22 Hornet and 22 Mag. are choice. Even 223 FMJ busts them up bad depending on the shot!
4/19/2011 7:36:30 PM
I've been eying a conversion for a while, how well do they sell?
4/28/2011 6:00:34 AM
more than 60 days old http://www.ar15.com/forums/topic.html?b=3&f=124&t=520146
