Dirty Bird 16″ SPR 6mm ARC Stainless Midlength M-LOK Complete Upper - D188
Out of stock
6mm ARC is quickly becoming one of the most versatile rounds for the AR-15. With better ballistic coefficients and velocity than 5.56 and .223 and a flatter shooting experience compared to .308, it’s no wonder this cartridge is becoming wildly popular! The Dirty Bird 6mm ARC complete upper is great for anything from hunting medium to large game, hitting targets at a 1000 yards with ease, and everything in between.
The 16″ 6mm ARC Complete Upper is built with accuracy and maneuverability in mind, which is why we went with the following components:
Ballistic Advantage 16 6mm ARC SPR Profile
- SPR Profile
- 416R Stainless Steel to maintain the highest level of accuracy
- 1:7 Twist Rate to stabilize most types of ammunition
Dirty Bird AR-15 SMRS Handguard – Slim M-LOK Rail System Gen 2
- Tough
- Machined from aircraft grade 6061-T6 aluminum extrusions.
- Type 3 hard anodizing or Cerakote sprayed at 1 mil thickness per spec.
- Versatile
- M-LOK attachment slots on all sides (except top)
- 1913 Picatinny top rail with shaved and beveled center section.
- Raised QD attachment points at the 3 and 9 o’clock positions.
- Snag free design with smooth, uniform octagonal surface ideal for accessory attachment or application of specialty coatings or patterns.
- Practical
- Aircraft Grade aluminum barrel nut. In our tests, the aluminum barrel nuts are just as effective when torqued to spec. Additionally, the weight savings enable us to utilize a longer barrel nut design which means more surface area at the attachment point without adding unnecessary weight.
Upper Receiver
- Precision Machined from Top Tier 7075-T6 Aluminum Forgings (forge marks may vary)
- Not all foged uppers are created equal and we only use the best for our uppers meaning they will be free from excessive pitting, machined to spec and finished with quality (not purple or chalky) hard coat anodizing
- M4 Feedramps
M16 / AR15 6.5 Grendel BCG
- 8620 M16 style carrier
- 9310 6.5 Grendel bolt
- 4140 billet gas key
- 4140 Cam Pin nitride treated for wear resistance
- Billet Machined Extractor
- Firing pin precision machined from 17-4 H-900 Stainless Steel
Charging Handle
- Mil-Spec Style
- 6061-T6 Billet Aluminum
- Smooth Operation and Positive Grip under Extreme Conditions
- Type 3 Class 2 Hard Coat Anodizing
Made in the USA
Dirty Bird Industries’ Limited Lifetime Warranty
| Weight | 62 oz |
|---|---|
| Dimensions | 28 × 5 × 5 in |
| Barrel Finish | Bead Blasted Stainless |
| Barrel Profile | SPR |
| Cartridge Compatibility | 6mm ARC |
| Barrel Length | 16" |
| Gas System Length | Midlength |
| Twist Rate | 1-7 |
| BCG / Charging Handle | Included |
| MPN | D188 |
| UPC | 810084373538 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
Customer Reviews
- Reviews
- Questions
- rotation tabs
- black
- three
- star
- Suppressor
- optic
- shots
- gas block
- fact
- hand guard
United States
A full power AR15 - Finally!
Topped it off with a ACOG and Sighted in my upper. Puts deer down like a .308. Great accuracy out to 500 yards.
United Statesdecenet
I have only had this 6mm ARC out for one shooting session. I put 40 rounds threw it breaking it in. After the first 10 round and getting my optic sighted in It started to perform better. I hit three Bulls in a row at 100 so we backed up to 200 yards. 3 inch group at 200 with the 108 ELDM ammo off the shelf. but that was probably me and the fact that the rifle isnt quite broke in. probably would have shot moa if i would slow down and take better shots. All in all im satisfied with the upper. I will tell you that in the description it says it has anti rotation tabs on the hand guard. It does not. That was something I really wanted on the handguard because I hunt with my ARs and it does not have them like it says it does. so right there is a star for me. Had to swap the gas block for an adjustable because I run a suppressor. Setting that wasnt as easy as I thought it would be either. The first 4 or 5 cases stuck in the chamber. Could have been pressure issues setting the gas block, IDk. But that went away when I opened it up a bit. I will hand load for this calliber so Ill make sure i get the acuracy im after. That being said, its a decent upper. should shoot just fine, and didnt come in with a single sctatch on it. looked really nice with the black and bead blasted stainless barrel.
