CMR-30 SBR and another prototype can

[MachIVshooter]

Considered doing this for awhile, just finally got around to putting my personal CMR in the bound book and lobbing the barrel to 10". Except for the flush mag, these things bear a strong resemblance to the MP-7 when you cut 'em down!



And then there's this thing:


4.1" long, 1.3" OD and 7.7 ounces, it's a fully welded entirely 17-4 stainless critter with a small reflex chamber. Hearing safe with the shorty .22 WMR, and only adds 3" to the OAL:



More testing to do on the can, but it should be robust enough for 5.56, although that won't be hearing safe. I designed it with .22 WMR and small centerfire rounds like the 5.7x28mm, .22 TCM and .22 Hornet in mind.

 

[WestKentucky]

That thing is pretty slick. You do good work all the time, but that cmr30 is a beauty. I haven’t seen a shorty yet. Just when I thought that the Suomi was cool...

 

[CapnMac]

Seriously cool.

 

[LoonWulf]

ok, ive never REALLY wanted to be able to own an SBR...but that thing right that makes me wish i could!

 

[Ryanxia]

Looks great! I wish they made one in 5.7 though. .22 WMR doesn't do anything for me.

 

[MachIVshooter]

Looks great! I wish they made one in 5.7 though. .22 WMR doesn't do anything for me.

Well, out of a 10" barrel, 5.7x28 has only about a 200 FPS advantage. CCI 40 gr. runs about 1,800 FPS from a 10" tube, while the 10.4" PS-90 hovers around 2K with SS197.

 

[ddc]

ok, ive never REALLY wanted to be able to own an SBR...but that thing right that makes me wish i could!

Me too.

 

[MachIVshooter]

My one gripe about the CMR is the amount of gas you get in your face running suppressed. You can actually watch it seep out around the bolt release tab for several seconds after you stop firing. But anyway:

 

[MachIVshooter]

Meters 133.6 dB avg. on the SBR CMR