Radian Weapons

Radian Vertex FBX Single-Stage Trigger for AR-15

Name: Radian Vertex FBX Single-Stage Trigger for AR-15
Brand: Radian Weapons
SKU: R0928
Price: 299.99 GBP
Availability: InStock

£299.99

VAT included.

£5 Tracked Delivery · 7–10 Business Days

Estimated delivery: Thu 10 Sep – Tue 15 Sep

Stock is imported from the USA to us, then shipped to you from the UK — we cover all duties and import charges, so there is nothing to pay on delivery.

Bundle & Save

Any 2 items

Save 5%

5% off your whole order

2 of this item

~~£599.98~~ £569.98

£284.99 each

Product Overview

The Radian Vertex FBX is a flat-bow single-stage drop-in trigger for AR-15 rifles, fitting any Mil-Spec lower with standard .154 in trigger pins.

Radian's current-generation Vertex, flat-bow — a precision-machined single-stage drop-in with a crisp break and a flat shoe for consistent finger placement.

The Radian Vertex FBX is the flat-bow (FBX) version of Radian Weapons' current Vertex single-stage trigger. The flat trigger shoe gives a consistent finger contact point and the feel of a lighter pull, over a self-contained drop-in cassette that delivers a clean wall, a crisp break and a fast, positive reset.

Why shooters choose the Vertex FBX

Precision single-stage break — crisp and consistent
Flat bow — consistent finger placement, lighter feel
Self-contained drop-in cassette — fast, clean install
Fast positive reset — control at speed

What the Vertex FBX fits

Drops into any Mil-Spec AR-15 lower receiver with standard .154 in trigger pins. The unit is a self-contained cassette, so there are no separate springs to fit and pins are supplied. Large-pin receivers will not take it, so confirm your pin size before ordering. Complete a full function and safety check before live fire. If you prefer a curved shoe, the Vertex CBX is the same trigger with a curved bow.

Specifications

Platform	AR-15
Fits	Mil-Spec AR-15 lower, standard .154 in trigger pins
Type	Single-stage drop-in trigger, flat bow (FBX)
Finish	Black
Made in	USA
Brand	Radian Weapons
MPN	R0928

Flat shoe, consistent press. Order the Vertex FBX today — in stock at Xtreme Tactical Gun Parts with £5 tracked UK delivery in 7–10 business days.

Explore more: AR-15 Triggers or browse all Radian Weapons.

What's Included

Radian Vertex FBX drop-in trigger cassette with pins

Compatibility & Fitment

Fits any Mil-Spec AR-15 lower with standard 0.154in trigger pins. Self-contained cassette.

Please confirm platform, interface and fitment requirements before ordering.

How It Compares

Choosing between versions? Jump straight to the alternative that fits your build.

Vertex CBX (curved bow) All AR-15 triggers AR-15 trigger buying guide Trigger brands compared

Technical Specifications

Platform	AR-15
Fits	Mil-Spec AR-15 lower, standard .154 in trigger pins
Type	Single-stage drop-in trigger, flat bow (FBX)
Finish	Black
Made in	USA
Brand	Radian Weapons
MPN	R0928
SKU / MPN	R0928
UPC / Barcode	810098421171

Shop Related Categories

Shop AR-15 Parts & Accessories View category

Shop AR-15 Triggers View category

Shop Radian Weapons View category

Shop Rifle Triggers View category

Related Buying Guides

Not sure which option is right for your build? These guides break it down.

Buying Guide AR-15 Trigger Guide: Single-Stage vs Two-Stage, Pull Weight & Fit

Buying Guide Geissele vs Timney vs TriggerTech vs Radian: Trigger Brands Compared

View all buying guides →

Product Questions

Will the Vertex FBX fit my lower?

It drops into any Mil-Spec AR-15 lower receiver with standard .154 in trigger pins. Large-pin receivers will not take it, so confirm your pin size before ordering — if you cannot tell from the paperwork, measure the pin holes or ask us with the make and model to hand. The unit arrives as a self-contained cassette with pins supplied.

What does the flat bow do for the pull?

A flat shoe places your finger at the same distance from the pivot however high or low you contact it, so the felt weight stays consistent shot to shot and the press is straighter to the rear. That extra leverage at the bottom of the shoe is why a flat trigger often feels lighter than a curved one of the same weight. Behind the shoe it is the same self-contained cassette, with a clean wall and a fast, positive reset.

Should I take the flat bow or the curved?

Mechanically the FBX and the curved-bow CBX are the same trigger, and the choice is about where your finger sits. Shooters with larger hands, and anyone who wants identical leverage wherever they press, usually get on better with the flat; the curved shoe is the more familiar feel if you have come off a standard Mil-Spec trigger. Compare the alternatives in AR-15 triggers, or see how the brands stack up in our trigger brands compared guide.

Is fitting straightforward?

The install is quick because the cassette goes in as one piece and the pins are supplied, but this is armourer-level work on the fire-control group rather than a bolt-on accessory. If you have not done it before, have a gunsmith fit it. Either way, complete a full function and safety check before live fire.

How will it arrive?

Triggers are sent from the United Kingdom with £5 tracked UK delivery in 7–10 business days, and you’ll get tracking by email when it ships. If a part turns out to be the wrong fit, see our returns policy or contact us and we’ll help sort it.