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This Dirty Bird Industries 13.7" 5.56 Complete Upper features a Dirty Bird Midlength Sub-MOA 416R Medium Profile barrel chambered in 5.56 with a 1:8 twist. Built on a top-tier Forged Upper Receiver, no corners are cut when manufacturing these complete uppers. All barrels are dimpled and cold blued, use a black nitride 4140 steel gas block and a stainless steel gas tube. The gas block set screws feature knurled cone tops and are installed using blue locktite ensuring that no amount of firing will cause the set screws to come loose but they will still able to be removed for servicing if needed.
Made in the USA – Backed by Dirty Bird Industries’ Limited Lifetime Warranty
Barrel
Chambered in 5.56 (will also function with .223)
13.7″ Medium Profile w/ 1:8 Twist
Midlength Gas System
Black Nitride Finish
Magnetic Particle Inspected
416R Stainless Steel
Sub-MOA Guarantee
Upper Receiver
Precision Machined from Top Tier 7075-T6 Aluminum Forgings (forge marks may vary)
Not all forged 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
Forge Markings may vary
May or may not have T-Marks
Handguard
Patented ASAL (Anti-Slip, Anti-Lift) mounting system
Included M-LOK QD Mount
Continuous picatinny top rail (V3).
The parts in the product picture are not indicative of the lowest priced option, and are only examples of how you can build your upper.
Take a look at our other AR-15 Parts here!
Use code: GUNDEALS5 for an extra 5% off your entire order!
Made in the USA – Backed by Dirty Bird Industries’ Limited Lifetime Warranty
Barrel
Chambered in 5.56 (will also function with .223)
13.7″ Medium Profile w/ 1:8 Twist
Midlength Gas System
Black Nitride Finish
Magnetic Particle Inspected
416R Stainless Steel
Sub-MOA Guarantee
Upper Receiver
Precision Machined from Top Tier 7075-T6 Aluminum Forgings (forge marks may vary)
Not all forged 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
Forge Markings may vary
May or may not have T-Marks
Handguard
Patented ASAL (Anti-Slip, Anti-Lift) mounting system
Included M-LOK QD Mount
Continuous picatinny top rail (V3).
The parts in the product picture are not indicative of the lowest priced option, and are only examples of how you can build your upper.
Take a look at our other AR-15 Parts here!
Use code: GUNDEALS5 for an extra 5% off your entire order!
