14.5" M4 5.56 NATO, 16" HB 5.56 NATO, 16" M4 5.56 NATO, 11.5" M4 5.56 NATO, 10.5" M4 5.56 NATO
Bloodline 16″ M4 5.56 NATO
From: $156.00 Select options

Bloodline 16″ M4 5.56 NATO

From: $156.00

This Rosco 16″ M4 5.56 NATO Bloodline Barrel is the perfect addition to your next build featuring perfect balance, properly sized gas ports in order to optimize performance and reduce premature wear and tear from over gassed barrels.

(5 customer reviews)

Melonite Gas Tubes

Our Rosco Melonite Gas Tubes have an extremely durable Black Nitride finish that increases corrosion resistance, wear resistance, fatigue strength and cosmetic appeal. These gas tubes work great under a handguard because they are more durable than standard gas tubes. Available in pistol, carbine, patrol length, mid-length, and rifle lengths. Does not include a roll pin.

Non-Adjustable Gas Block

Our Rosco Non-Adjustable Gas Blocks are purposely designed to be lined up perfectly with our barrels and gas ports to ensure reliable cycling every time. We have created two options for the end user; Our Non-Adjustable gas block is a direct plug in for any one of our barrels and has provisions for pinning, our Adjustable block picks up where our standard block leaves off and works perfectly for shooters that want to be able to control their gas flow for suppressed applications.

Adjustable Gas Block

Our Rosco Adjustable Gas Block is purposely designed to be lined up perfectly with our barrels and gas ports to ensure reliable cycling every time. We have created two options for the end user; Our Non-Adjustable block is a direct plug in for any one of our barrels and has provisions for pinning, our Adjustable gas block picks up where our standard block leaves off and works perfectly for shooters that want to be able to control their gas flow for suppressed applications.

In stock

16″ M4 5.56 NATO Bloodline Barrel: This Rosco 16″ M4 5.56 NATO Bloodline Barrel is the perfect addition to your next build featuring perfect balance, properly sized gas ports in order to optimize performance and reduce premature wear and tear from over gassed barrels.

Our Rosco 5.56 (NATO) barrels are designed to meet the modern day carbine shooters requirements. We are a long way from our daddy’s “Sporter” AR, and those specs just won’t cut it anymore. From properly managed dwell times for SBR’s, to running Suppressed, or setting up a balanced patrol carbine we have incorporated your needs into our engineering. We have successfully accomplished this by picking the right twist rates, gas port diameters, and barrel materials according to the barrel we are making (not a lazy blanket method). We have also balanced input from our consumers and military end users in order to bring you the product you need, not just the one we want to sell you.

 

Barrel Length 16″
Barrel Weight 28.97 oz
Barrel Material 4150 CMV
Barrel Caliber 5.56
Barrel Profile

M4

Twist

1/7

Barrel Thread

1/2 x 28

Gas Block Size

.750

Gas System Length

Carbine
Barrel Crown

11 Degree

Barrel Finish

Nitride

Barrel Extension Finish

Nitride

Browse all of our 5.56 NATO Bloodline Barrels >>

Additional information

Weight 2 lbs
Dimensions 19.5 × 2.3 × 2.2 in

Melonite Gas Tubes

Length

Carbine Length

5 reviews for Bloodline 16″ M4 5.56 NATO

  1. John Scott (verified owner)

    Purchased for a 5.56 build. Test fire was successful and this barrel went above my expectations. My next build will be using a Rosco Barrel.

  2. X Ring Precision (verified owner)

    Rosco barrels are the only barrels we use in our manufactured ARs.

    Made in America 🇺🇸 ⭐⭐⭐⭐⭐
    Quality ⭐⭐⭐⭐⭐
    Accuracy ⭐⭐⭐⭐⭐
    Fit & finish ⭐⭐⭐⭐⭐
    Cost ⭐⭐⭐⭐⭐
    Service ⭐⭐⭐⭐⭐
    Sales ⭐⭐⭐⭐⭐

  3. Adam Millang (verified owner)

    Great fit and finish, went together great, accurate with even the cheap ammo! Will definitely use a Rosco barrel again!

  4. Duke Hoffman (verified owner)

    Quality everything . Nice finish and labeling . Saved me having to dimple the barrel , Nice packaging and fast turnaround . I’m impressed .

  5. Anthony Callender (verified owner)

    Great barrel it’s going to be used for a build that I wanted accuracy and round options

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