• No products in the cart.

  • 0
  • No products in the cart.

  • Full Metal Mayhem AR9-B&BRZ Series K 4.5


    FMM AR9 Pistol. Series K 4.5″ Barrel. 9mm

    Only 1 left in stock

    Add to wishlist

    Share via:

    SKU: AR9-B&BRZ Series4.5-Kentri Categories: , , Tags: , , , , ,


    AR9 Black and Bronze Series K 4.5 AR Pistol in 9MM.

    This AR9 Pistol, finished in Black with Bronze Anodized components is the next-level AR9 pistol and is unlike anything you’ve ever seen. This 9MM AR Pistol has an ultra-compact rear extension that extends less than 3¾” beyond the receiver.  This system does not use a buffer but rather uses action springs on a guide rod, more similar to a striker-fired pistol than a standard AR. Fitted with a premium 4.5″ barrel, a free-floating 4″ M-LOK handguard and match-grade drop-in 4 lb. trigger, this is one the most unique, extremely compact, AR pistols you can buy. Ships with two 33-round 9mm Glock-compatible magazines, a red/green multi-reticle reflex sight and a soft case. This AR9 features LRBHO (last round bolt held open) for faster reloads and is built on a 9mm specific upper and lower receiver (does not use or need magazine adapters.)

    This premium Black and Bronze Anodized AR Pistol will be the standout in any collection.

    Please email sales@fullmetalmayhem.com should you need additional information before ordering.

    Check your local and state laws regarding magazine capacity and detachable magazine compliance before ordering. Not legal for sale in California. You must be 21 or older to purchase.

    Ships to your FFL.

    Eligible for Free Shipping

    Additional information


    Full Metal Mayhem


    AR9 B&BRZ Series K 4.5


    AR9 Pistol


    AR9-B&BRZ Series4.5-Kentri




    33 Round


    Ambidextrous Safety Selector


    4 lb Pull, Drop-in, Single-Stage


    4.5" Barrel (chambered in 9MM
    1:10 twist, Steel
    4" Handguard, M-LOK
    Buffer-less action
    4lb Drop In trigger with Adjustable Shoe
    Bronze anodized Ambidextrous Multi-Degree Short-Throw Safety Selector
    Red/Green Reflex sight with 4 selectable reticles


    Forged 7075-T6 Aluminum/41V50 Steel,
    Colors: Black Anodized, Black Nitride, Bronze Anodized, Nickel


    Weight: 4 lbs. 8.9 oz. with empty magazine
    Length: 15.625” long (as measured from muzzle to end of lower extension)
    Height: 7.25"
    Width: 2"


    33-Round Glock compatible magazine, 2 each
    Soft AR Pistol case
    Trigger lock


    There are no reviews yet.

    Be the first to review “Full Metal Mayhem AR9-B&BRZ Series K 4.5”

    © 2021 Full Metal Mayhem LLC. All rights reserved.