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CMMG Inc. AR-15 Mk4 Complete Lower - Blue/Black, Synthetic, Collapsible Stock

   12 Reviews
| 0 Questions & Answers
Model: 55CA360
 
Condition: Factory New
 
Bud's Item Number: 86229
 
UPC: 852005002523
 
MFG: CMMG

CMMG Inc. AR-15 Mk4 Complete Lower

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The CMMG AR-15 Mk4 Complete Lower Group with MK4 Collapsible Butt Stock is an excellent starting point for your standard AR-15 build. This will work with most standard AR-15 calibers like the 9mm Luger, .40 S&W, 5.56 NATO, .223 Remington, .300 AAC Blackout etc. Starting with a high quality component like the CMMG Mk4 Complete Lower Group with MK4 Collapsible Butt Stock gives you assurance of quality in form and function. Don't use sub par parts from some unknown manufacturer, go with a name you can trust, go with a CMMG AR-15 Mk4 Complete Lower Group with MK4 Collapsible Butt Stock.

Specifications and Features:
CMMG AR-15 Mk4 Complete Lower Group with MK4 Collapsible Butt Stock
6 Position Mil-Spec Extension
Forged 7075-T6 Aluminum
Hard Anodized Black
Single Stage Mil-Spec Trigger
A2 Pistol Grip
Standard AR-15 Safety Selector
Standard Carbine Spring and Standard Weight Carbine Buffer
Standard takedown/pivot pin holes and .155" hammer/trigger pin holes

Fits:
9mm Luger, .40 S&W, .45 ACP, 10mm Auto, 5.7x28mm, 5.56 NATO, .223 Remington, .300 AAC Blackout, .24 Ruger, 5.45x39mm, .300 Whisper, 6.5mm Grendel, 6.8 Remington SPC II, .458 SOCOM, and .50 Beowulf
OUT OF STOCK
Retail Store Availability
In-Store Purchase Only
Lexington, KY Not in store
Greenville, KY Not in store
Sevierville, TN Not in store
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CMMG Inc. AR-15 Mk4 Complete Lower
Model
55CA360
Condition
Factory New
Bud's Item #
86229
UPC
852005002523
Manufacturer
CMMG
The CMMG AR-15 Mk4 Complete Lower Group with MK4 Collapsible Butt Stock is an excellent starting point for your standard AR-15 build. This will work with most standard AR-15 calibers like the 9mm Luger, .40 S&W, 5.56 NATO, .223 Remington, .300 AAC Blackout etc. Starting with a high quality component like the CMMG Mk4 Complete Lower Group with MK4 Collapsible Butt Stock gives you assurance of quality in form and function. Don't use sub par parts from some unknown manufacturer, go with a name you can trust, go with a CMMG AR-15 Mk4 Complete Lower Group with MK4 Collapsible Butt Stock.

Specifications and Features:
CMMG AR-15 Mk4 Complete Lower Group with MK4 Collapsible Butt Stock
6 Position Mil-Spec Extension
Forged 7075-T6 Aluminum
Hard Anodized Black
Single Stage Mil-Spec Trigger
A2 Pistol Grip
Standard AR-15 Safety Selector
Standard Carbine Spring and Standard Weight Carbine Buffer
Standard takedown/pivot pin holes and .155" hammer/trigger pin holes

Fits:
9mm Luger, .40 S&W, .45 ACP, 10mm Auto, 5.7x28mm, 5.56 NATO, .223 Remington, .300 AAC Blackout, .24 Ruger, 5.45x39mm, .300 Whisper, 6.5mm Grendel, 6.8 Remington SPC II, .458 SOCOM, and .50 Beowulf

12 Reviews. 4.7 out of 5 Stars!
5 Stars
92%
4 Stars
0%
3 Stars
0%
2 Stars
0%
1 Star
8%
Write Review
Steve B on 03/30/2022
Rating:   5 of 5 Stars!

Good quality product for a budget build AR

Alex F on 05/19/2020
Rating:   5 of 5 Stars!

This combined with an Anderson upper is a hard combination to beat. It is a MilSpec so expect the usual rattles and interesting noises. But that is why I got it for reliability and it will shoot any type of ammo I put in it 1200 rounds and only one FTE and no FTF's. Reliable and durable will purchase again if I build another one, Buds shipping and handling was as usual great and I highly recommend you get the insurance with all the products you buy in the firearms category.

Bernard N on 12/15/2018
Rating:   5 of 5 Stars!

For the money this CMMG is great !!!

Robert R on 07/09/2017
Rating:   5 of 5 Stars!

AWESOME! Very accurate and functions great.Would buy another but why?

Ralph C on 03/31/2017
Rating:   1 of 5 Stars!

The product failed in service 1 day after FFL transfer. The CMMG Mk4 complete lower assembly was purchased from Bud's to finish an AR15 build. The initial inspection at my FFL dealer was ok, so I signed the transfer and brought it home. Next day, I attached my trusty 300AA blackout upper, and off to the range I went. First shot the trigger bound up and wouldn't reset. I brought it home and disassembled it from the upper and had a look. I checked the trigger and yes indeed, no reset. The trigger binds up on every cycle. Comparatively, I had bought a Spikes STLC200-SBS complete lower assembly a year ago that is spot on, and it runs flawlessly. I bought the CMMG to save a couple of bucks. Guess you know where this ones going. LOL. Comparing apples to apples. The Spikes is better built inside and out. The machined casting is a lot cleaner on the Spikes. It attaches to my Anchor-Harvey casting upper receiver much tighter than the CMMG, and the anodized finish is way better on the Spikes. The CMMG trigger guard rattles, the buffer rattles, the mag catch rattles The supplied butt-stock has sharp edges all over it and the grip is even less quality than the Spikes if you can believe that!. Keep in mind, there are is less than 20 dollars difference between these two receivers at Bud's. Buyer beware. CMMG gets a poor quality rating all the way around.

Johnny T on 03/18/2017
Rating:   5 of 5 Stars!

Very well made lower. Should work great on my next build. One of the nicest triggers I've seen on an AR lower. Bids and CMMG or A+++.

Paul G on 03/16/2017
Rating:   5 of 5 Stars!

Really fantastic lower. Great price too. Runs great and has a nice trigger.

Joe C on 02/08/2017
Rating:   5 of 5 Stars!

Had this lower on a cmmg 300 blk out upper never had a problem with it

Paul M on 12/26/2015
Rating:   5 of 5 Stars!

I really like this lower. I think if has the best mil-spec trigger I have ever pulled.

James D on 04/21/2015
Rating:   5 of 5 Stars!

Everything worked as expected. Perfect fit with my upper. Crisp trigger.

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