5.45 Barrel *23mm AKM Config* by Rosco Mfg

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5.45x39 Black Nitride Barrel produced by ROSCO Mfg. to complete your 23mm sized kit!*

They are Made from 4150 Chrome Moly steel and black nitrided inside and out.
OPTIONAL Gas Port is drilled at 90 degrees in the 45 degree location, size 0.076 (#48). Gas port is drilled by factory, so the port is nitride finished, we do not perform the drilling as a service.
Chosing no gas port is perfect for custom builds or if you plan to use a 90 degree AK-74 gas block.**

The handguard retainer slots and extractor clearance cut is already in place.

Barrel profile uses standard AKM journal specs. Perfect for our WBP 5.45 kits, or an AIMS 74 if you are missing the hard to find unique front sight post and want to use a 47/74 front sight.

Twist rate 1:10

Examples of common step fee requests: Using a Jmac or Definitive Arms Combo Gas Block, AK-74 parts, Chopped barrel but still want to use a separate gas block and front sight (AMD-style).

*We will not turn down the trunnion journal from 23mm to 22mm without receiving your trunnion to ensure proper press fitment.
**AK-74 parts will need the front sight and gas block journals extended a bit, please use the Step Fee and request via checkout notes if you need this done.

  • 5
    Rosco 5.45 barrel

    Posted by Ryan Jungmeyer on Apr 1st 2023

    This barrel is the perfect fit for converting my Romanian SAR3 from 556 to 5.45 like it should have been in the first place.