Radian Vertex Trigger - AR-15 Single-Stage - Curved
Mix and match across the range: 2 items save 5%, 3 save 10%, 4 or more save 15% on your whole basket.
Drop-in fit for AR-15/M4 pattern lower receivers with mil-spec trigger pins. Confirm pin size before ordering.
Not sure it fits your rifle? Ask us before you order
The Radian Vertex Curved is a single-stage drop-in trigger for AR-15 and M4 rifles, fitting lower receivers with standard Mil-Spec trigger pins.
The Vertex single-stage with a classic curve — traditional feel, Radian-grade execution.
The Radian Vertex Curved (ACC-0016) delivers the same 3.5–4 lb (1.6–1.8 kg) single-stage break as its flat-bow sibling through a traditional curved trigger shoe — the profile shooters raised on classic rifles find most natural, cradling the finger pad and giving tactile certainty of position without looking for an edge. Take-up is minimal, the break is clean, and the reset is short and distinctly felt.
Radian Weapons' machining discipline shows in a pull that feels identical on every press and stays that way through hard use. A sensible weight and single-stage simplicity make it a superbly versatile upgrade.
Drops into AR-15/M4-pattern lower receivers using standard Mil-Spec trigger pins, so no additional hardware is needed beyond your existing pins. Receivers with oversized pin holes need a different trigger, so check yours before ordering — if you cannot confirm the pin size from the paperwork, measure the holes or ask us. Fitting is an armourer-level job and a full function and safety check must be completed before live firing.
| Platform | AR-15 / M4 |
|---|---|
| Fits | AR-15/M4 lower receiver, standard Mil-Spec trigger pins |
| Type | Single-stage trigger, curved bow |
| Finish | Black |
| Pull weight | 3.5–4 lb (1.6–1.8 kg) |
| Made in | USA |
| Brand | Radian Weapons |
| MPN | ACC-0016 |
The classic curve, done right. Order the Vertex Curved today — imported from the USA with all duties paid by us and dispatched tracked from the UK in 7–10 business days, with nothing to pay on delivery.
Explore more: all Rifle Triggers, AR-15 Parts & Accessories or browse all Radian Weapons.
| Platform | AR-15 / M4 |
|---|---|
| Fits | AR-15/M4 lower receiver, standard Mil-Spec trigger pins |
| Type | Single-stage trigger, curved bow |
| Finish | Black |
| Pull weight | 3.5–4 lb (1.6–1.8 kg) |
| Made in | USA |
| Brand | Radian Weapons |
| MPN | ACC-0016 |
| Category | Trigger |
| Shipping weight | 0.907 kg |
| Barcode | 817093027407 |
£5 tracked UK delivery on every order via Royal Mail Tracked 24. Our products are ordered in from the manufacturer rather than held in UK stock, so please allow 7 to 10 business days (Monday to Friday, excluding bank holidays) from the date of your order for it to reach you. Tracking details are emailed on dispatch. UK delivery only.
You have 30 days from receiving your order to cancel it for any reason, then 14 days to send it back unused and in its original packaging. Faulty, damaged or incorrect items are replaced or refunded and we cover reasonable return postage. Refunds go back to your original payment method within 14 days of receiving the return.
It is a drop-in fit for AR-15/M4 pattern lowers using mil-spec trigger pins. Receivers with oversized pin holes need a different trigger, so check yours before ordering. If you cannot confirm the pin size from the paperwork, measure the holes or ask us.
It is a single-stage unit breaking at 3.5 to 4 lb (1.6–1.8 kg), with no first stage to take up, which many shooters find quicker to learn than a two-stage. The weight is fixed rather than adjustable, so it is a matter of deciding whether that range suits your shooting. For a general-purpose or defensive-style carbine it is a sensible weight.
Mechanically they are the same trigger; the difference is where your finger sits. The curved shoe feels familiar if you have come from a standard mil-spec trigger and naturally centres the finger, while the <a href="/products/radian-vertex-trigger-flat-bow">flat bow version</a> keeps the leverage identical wherever you press. Shooters with larger hands often prefer the flat, but it is worth handling both if you can.
It is supplied in black in a single configuration, and no additional hardware is needed beyond your existing standard pins. Do a full function and safety check before live firing. If you want to see how it compares with other single-stage options, browse our <a href="/collections/ar-15-triggers">AR-15 triggers</a> collection.
This one is dispatched from the United Kingdom with £5 tracked UK delivery in 7–10 business days, and tracking follows by email once it ships. If the trigger is not right for your rifle, see our returns policy or <a href="/pages/contact">contact us</a> and we'll help sort it.
7 to 10 business days from the date of your order. Every order is sent Royal Mail Tracked for a flat £5 and you receive tracking details by email when it is dispatched.
Yes. We list only genuine parts and optics from the brands shown, ordered in from the manufacturer for your order.
Compatibility notes on this page come from the manufacturer. If you are unsure, email us with your make and model before ordering and we will check rather than guess.
Yes. Bundle & Save applies automatically in your basket: 5% off when you buy 2 items, 10% off at 3 items and 15% off at 4 or more. It works across the whole range, so you can mix and match, and there is no code to enter.
Yes — you have 30 days from delivery to cancel for any reason, as long as the item is unused and in its original packaging. See our returns policy for the details.
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