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Reactor19 Builder Kit - For GLOCK G19 Gen5

Arc Divisions integrally ported slide and barrel builder kit for Gen5 Glock 19/19x/45.

The kit include a slide, barrel, backplate, and optic cut cover plate.

Internal parts kits and channel liners are not included.

Black Nitride only.

Compatible with factory and aftermarket kits.

Reactor19 Builder Kit - For GLOCK G19 Gen5

Rating is 3.0 out of five stars based on 2 reviews
$549.99Price
Excluding Sales Tax
Quantity
  • Slide

    • Compatibility: Gen5 19, 19X, 45
    • Material: 416 stainless (heat treated 40-41 rockwell)
    • Slide Finish: Black Nitride
    • Backplate: Black anodized Aluminum
    • Made in the USA

    RED DOT COMPATIBILITY: Trijicon RMR, Holosun 407c/507c/508c 

    Barrel

    • Handgun Type: 19
    • Barrel Caliber: 9mm
    • Barrel Profile: Ported Reactor Barrel
    • Barrel Finish: Black Nitride
    • Barrel Material: 4150
    • Barrel Twist: 1:10
    • Crown: 11-degree Target Crown
    • Rifling Method: Button Rifled, Fully Stress Relieved
    • Rifling Type: Conventional 
    • Made in the USA

Reviews

Rated 3 out of 5 stars.
Based on 2 reviews
2 reviews
  • Mike Oct 09, 2025
    Rated 5 out of 5 stars.
    Verified
    Reactor19 Builder kit

    This is my second Reactor19 Builder Kit I've purchased from Arc Division. I can honestly say Arc has the best slides out in my opinion. Craftsmanship and attention to detail shows in its reliability! These are my favorite EDC guns-simply bad ass workhorse! As for being a very small company, you can tell that Patch cares about quality and his customers. Currently trying to figure out what slide to get next from Arc. Try em out, you won't be disappointed.

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  • Kyle6 days ago
    Rated 1 out of 5 stars.
    Verified
    Painful Experience

    If you enjoy paying for and purchasing an item with the expectation that you will receive it in a reasonable time (given no expectation from the website that it is not made to order or an expected lead-time) and you enjoy waiting over a month and still no communication on arrival, then this is the place to buy a product. Otherwise buy a Glock slide that is a complete slide and in stock somewhere else. Thanks for wasting a month of time and money.

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