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SVERD .300BLK Upper

SVERD .300BLK Upper

$600.00 Regular Price
$500.00Sale Price


Approximately 2-6 week lead time.

Developed as a challenge to prove that there is no reason why the 300blk platform needs to be expensive or difficult to get operational.

This is the SVERD.

This upper comes out of the box with premium internals. Specifically, a Rosco 8.2” 1:7 twist barrel with a Rubber City Armory nitrided BCG using a C158 bolt, Sprinco springs, an adjustable gas key, and OCKS as standard!

Every upper is assembled with our extreme attention to detail. Grease is applied where needed, loctite is applied where needed, and all torque values are met!

So how did we reduce cost? Let us explain:

With this upper we set to reduce cost via cosmetics, careful parts selection and labor time reduction.

One example of this would be the gas block.

It is no secret we dislike set screw gas blocks. However, in order for us to keep high quality internals we had to use a set-screw gas block for exactly what they were meant to be: A low cost, fast and foolproof way of attaching a gas block to a barrel.

That said, in order for this to be the case, the barrel needs to be dimpled. Which of course in true Eitri’s Enhancements nature, we don’t skip out on processes, which means this barrel is dimpled to mate with the gas block.

This upper is ready to drop onto any ar15 complete lower with a simple initial gas adjustment to work with your lower and suppressor of choice!

  • Requirements


    We recommend the use of full power springs, even with subsonic ammunition.

  • Terms and Conditions

    Eitri’s Enhancements, LLC is not responsible for any property damage, physical damage, bodily injury, or bodily harm caused by use of its products or services. Customer, by paying the purchase price of this item, agrees that he or she shall be solely responsible for any such harm that may occur from the use of any Eitri’s Enhancements, LLC product or service. Customer also warrants that they have read, reviewed, and fully understand how to operate any product purchased from, serviced, and/or man

  • Specifications

    Caliber: .300 BLK

    Barrel: Rosco 8.2”

    Twist: 1:7

    Bolt: C158

    Carrier: Nitride by H&M

    Gas adjustment: Yes

    Handguard: 7” M-Lok

    Upper: Billet 6061 aluminum

    Gas block: set screw style with dimpled barrel

    Muzzle: A2 flash hider

    Charging handle: mil-spec

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