Home CMMG HD 300 Blackout Upper by CMMG Unboxing Review on My DPMS...

HD 300 Blackout Upper by CMMG Unboxing Review on My DPMS Lower

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Unboxing of my New 300 Blackout AAC CMMG Upper on my DPMS Lower that I assembled this summer.

M300 AAC Blackout Upper w/Mid Length 4 Rail FFT

•Mid Length 4 Rail Free Float Tube
•Pistol or Carbine Length Gas System (choose below)
•Flat-top A3 Upper Receiver
•Compatible with standard AR15 lowers
•16″ Barrel
•1:8 Twist
•5/8×24 Threaded A2 Style Flash Hider
•Chambered in 300 AAC Blackout

Part Number:LU-M300-1603R

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25 COMMENTS

  1. Yea i have done some research on it what do you think the resoning behind it was because it really dissapointed me the blackout with a bullet big enought to hunt with only travels 1015fps at muzzel and its supost to be a 300 lol they make pellet riffles now days that shoot faster lol anyways it just has really been bugging me thanks for the reply

  2. Is the 300 Blackout not the same caliber as a 300win? i was about to buy one but that looks like about the size of a 7.62 round i shoot a 300 win right now and im not going to go down in caliber size if thats the case thanks.

  3. @flyjoshh Sorry Haven't Shot the 220 yet but I think they recommend 11.2 grains of A1680 powder and Sierra 220 MK loaded to 2.120 OAL let me know what u find out for the 110gn thats my next load to figure out I've got some UMC comming in from Midway on the 18th backorder – Charles

  4. @jefezilla I won it on Ebay I looked for the company but they dont have any auctions up. It works when its dark but in broad daylight ist hard to see. I'm looking for a green laser they are a whole lot better than red – Charles

  5. @bobsolla I going to try to reload some when my die come in I special ordered them from fsreloading. Remington has the cheapest so far 12.99 for 20 115g I'm waiting to see some reviews to see how they hold up. Thanks for stoping by – Charles

  6. nice!it only takes me 30-45 minutes to build a complete lower taking my time.i would`ve built it then!good luck!i think i might put this cmmg on my new lower!i`am just hoping that the ammo gets cheaper and more common like .223!

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