CMMG Banshee MK57: The Best Platform For 5.7?

Please review the bersa xt pro 9mm soon…

The 5.7mm is such a soft shooter. I too have made hits on steel out to 300 meters. It's so easy to do with, I did it with RMR on a PS90 SBR offhand. Except guess how much energy that bullet (40gr Vmax) has when it gets to 300 meters? Less than 128 ft-lbs of energy. Like 79 ft-lbs when its the American Eagle 40gr. I know that's not the point of this round or the video.

5.7mm are dumb.
https://pistol-forum.com/showthread.php?4338-Small-Caliber-PDW-s-FN-5-7-mm-HK-4-6-mm

P90>Banshee every day. Better reliability, fully ambi, no fidgeting with a stock, higher capacity, longer barrel for overall length, plus aesthetically the p90 looks better. The 5.7 round was designed specifically for 10.4” barrel and is very velocity-dependent. Good video, but I’m sticking with my ps90.

Nice round but too expensive.

great video, awesome info👍

Your black and white drop intro is also used by British-Asian pornstar named Harriet Sugarcookie.

why would you shoot out into the open? that's incredibly unsafe, in my opinion

I got to have one🤤

It would be nice to see a longer barrel setup for varmint hunting.

Maybe the video title should be the best 5.7 platform available commercially to civilians?

If you want the 30rd ProMag mags to work reliably, take the spring out and swap it with a factory FN mag spring, or buy one from EA.

Whenever something at that price range comes with warnings like " dont use this mag, that mag or in this way" is a big negative for me. This thing should be a fine tuned beast at this price point.

I wish they made the PS 90 in 9mm.

This is cool, but id rather have a 12.5 in 5.56 or 10 inch .300. I like that little ACOG on there though.

Awesome video! Very informative!

The 5.7 is such an incredible round. It’s amazing to me it hasn’t had more adoption. I love my PS90 but the AR platform is better. Great to see CMMG driving adoption of a round as unpopular but as superior (in many ways, not all). I love the long range of can switch to without a major re-zero. I love that at high velocities, as a home defense round, it breaks down through walls so easily yet is so easy to keep quite and avoid over penetration. I love the PS90 bullpup design to keep it short without an SBR stamp, yet, I have many stamps so that’s not an issue for me but has been a BIG advantage for me. The 50 rounds of the PS90 when I’m meeting someone naked or in a pair of shorts/underwear has been highly convenient. No doubt this will become available with the AR platform with some adoption.

Great video as always

HaHa! Promag should change their name to Semi- promag. Great review!

Would the Q erector suppressor work well also?

The USSS no longer uses the P90.

Banshee Mk. 57 is like the Mini-Me of the AR15. Smaller, cuter, and just as fun. m/

Great video!

So what was the one box of Subs you did not name?

I have 1000 rounds through mine & love it. CMMG started shipping with Promags because they were having trouble with FN (gen 2) mags so did I, caused jamming. After using Promags, no hiccups with 800 rounds. This was affirmed by CMMG tech also.
Ed Lee

great video as usual. i have an AR platform 5.7 called the "AR57". 50 round ps90 magazine and a dummy pmag sits in the mag well to catch brass. has been reliable and accurate. i'll shoot you a picture on twitter if you want.

Do they make these CT legal? I’d buy one for sure

Now if q made one of these it would be liiight

Wonder if the rattler would be more accurate than this.

You make a lot of good points, but I still think that when it comes to real world PDW usage, the P90 wins out by far. Most notably, it's the best when it comes to compactness, which it could be argued is the most important feature of a PDW. Of course, if you have a PS 90 with a 16 inch barrel, you're not going to get that. But this isn't the real thing. Plus, if you do have that full auto capability, that 50-round magazine is going to start counting for a whole lot more. I don't really have a need for a new 5.7 and I have essentially stopped shooting around almost all together, so I'm probably going to pass this one up. But a good review none the less

Great shooting, impressive gun, BUT THE BIG FAIL is not using the 50-round P90 mag like its competitor.

Tho it is a pretty nice set up, I'm sticking with my PS 90. Something about 50 rounds that makes me feel warm and fuzzy. Since I own the 5.7 Mark 2 pistol also, I can holster my pistol and carry my PS 90 and get 70 rounds without reloading.

Why is there never any love for the 22 tcm?

Daddy likey. Ive been $avin up for a cz Bren , or a POF p415 but after seeing this, they might be moving back in the pack. I have always loved the 5.7 round but didn’t like the platforms offered… til now
Thanks again for the nice work

I have been watching the stats on this round for a while now, it has potential for sure !! The banshee looks sweet and now I want one ! thanks for the video brother !!!

Awesome review, Thank you.

How do you feel about the 5/7 Vs the 300 blackout? And I may be confused but wouldn’t this be considered a pistol due to t being under a 16” barrel? #greatvid
#ilikethisSBR

I like 5.7×28 and even kind of want a Mk57, but: 1. I'd rather do 1 mag change in the PS90 than 4 in the Banshee. 2. The PS90 factory rail is embarrassingly unusable, but aftermarket replacements (e.g. Design Machine) exist that position red dots comfortably low. 3. The only thing 5.7 currently has over .223 in a standard feed AR-15 is less blast. A 5.7 AR could be lighter than a .223, but the Mk57 isn't.

🙄
People keep ignoring the strength of the P90.

It’s not the round.
10” barrel in the shortest & most controllable possible configuration that fires at 900 rpm.

& just happens to have one of the largest standard capacity of any magazine fed weapons.

The Silencerco Sparrow will also handle the 5.7 round.

Is it better than the HK MP7?

Yet another GREAT review on yet another GREAT firearm!!! I NEED ONE of these with thatv#DeadAir can!☝️🙏🤞💪🏻🇺🇸 #2A

How's it going?? Solid Overview!!! 🙂

I heard these have a bi lug muzzle. How do you attach suppressors that aren’t cmmg’s line? I have a hybrid and know that they don’t even make a bi lug attachment… asking for help

Skyfall?

Love my dead air mask