Home CMMG PDW’s and the CMMG MK57

PDW’s and the CMMG MK57

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This is a review of the CMMG MK57 PDW with the rotary delayed operating system.

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24 COMMENTS

  1. In my state an SBR is a long gun – so loaded and ready vehicular carry is a no-go. I like the delayed radial blowback on the Banshee but it still is a DI gun rquiring a buffer tube. Id more interested in a 300 BO Dissent which is bufferless and a stock is optional.

  2. Man work up the lightest for caliber 5.56 load for velocity in short barrels…mine range from 3kfps for 55grhp down to 2100fps with 77gr smk’s and 85gr nosler rdf..super extra pointy..16” doublestar upper…I need a 24” upper for the shootin I do…..

  3. I don't understand the increasing love affair with SBRs and AR pistols. I'm abundantly happy with my 20" A2 with the PERMANENT carry handle. No scopes or any optics whatsoever, just adjustable iron sights, and I'm perfectly happy with it. The only rifle I have that's shorter is my .458 SOCOM, but 16" or 18" is all that round really needs.

  4. On this type of PDW, essentially 5" or so AR, I see you're running optics only. Would you recommend that kind of setup versus optics & backup irons? I have a 9mm PDW AR that is 5" and been playing around with various sight setups, optic/fixed irons, optic/flip ups, etcetera.

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