TriggerTech Diamond Two-Stage Trigger - AR-15 - Flat 1.5-4 lb - Black/Red
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 TriggerTech Diamond Two-Stage is an externally adjustable two-stage drop-in trigger with a flat shoe for AR-15 and M4 pattern rifles.
Two stages, no creep — the Diamond Two-Stage brings frictionless staged control to precision AR-15 shooting.
The TriggerTech Diamond Two-Stage AR applies Frictionless Release Technology to the two-stage format: a smooth, rolling first-stage take-up into a wall TriggerTech credits as free of creep, then a break that happens exactly where your finger learned it lives. Externally adjustable from 1.5 to 4 lb (0.7–1.8 kg) total, it covers everything from deliberate target work to faster staged shooting — and the reset remains signature TriggerTech: short, crisp, certain.
The flat shoe adds repeatable finger indexing and leverage, while sealed stainless internals mean the pull you tuned survives dust, rain and thousands of cycles.
Drop-in fit for AR-15/M4 pattern lower receivers with standard Mil-Spec trigger pins, which includes UK straight-pull AR-15 builds — an adjustable two-stage is arguably the best match for a straight pull, since the rifle is shot deliberately and the staged wall rewards a settled sight picture. Confirm your pin size before ordering. Function-check the rifle before live fire.
| Platform | AR-15 / M4 |
|---|---|
| Fits | Mil-Spec AR-15 / M4 lower receivers, standard trigger pins |
| Type | Two-stage trigger, Frictionless Release, flat shoe |
| Material | Sealed stainless internals |
| Finish | Black/Red |
| Pull weight | Adjustable 1.5–4.0 lb (0.7–1.8 kg) |
| Made in | North America |
| Brand | TriggerTech |
| MPN | AR0-TRB-14-NNF |
Staged control, frictionless execution. Order the Diamond Two-Stage 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 TriggerTech.
| Platform | AR-15 / M4 |
|---|---|
| Fits | Mil-Spec AR-15 / M4 lower receivers, standard trigger pins |
| Type | Two-stage trigger, Frictionless Release, flat shoe |
| Material | Sealed stainless internals |
| Finish | Black/Red |
| Pull weight | Adjustable 1.5–4.0 lb (0.7–1.8 kg) |
| Made in | North America |
| Brand | TriggerTech |
| MPN | AR0-TRB-14-NNF |
| Category | Trigger |
| Shipping weight | 0.1 kg |
| Barcode | 885768000864 |
£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 lower receivers using mil-spec trigger pins, so it goes straight in where the standard fire control group came out. Confirm your lower uses mil-spec pins rather than large pins before ordering, as that is the usual compatibility question. No permanent modification to the receiver is involved.
The Diamond is the top of the AR line here and gives the widest useful adjustment of the two-stage models, from 1.5 lb (680 g) up to 4.0 lb (1.8 kg) total. That range takes it from a light bench or precision setting right up to a general-purpose weight. Our <a href="/blogs/buying-guides/ar-15-trigger-guide">AR-15 trigger guide</a> walks through how to pick a weight to suit the way you shoot.
The unit is specified as adjustable between 1.5 lb (680 g) and 4.0 lb (1.8 kg), and you should stay inside that range rather than trying to force it lower. Very light settings suit deliberate slow fire from a rest; if the rifle is used for anything more dynamic, most shooters settle nearer the top of the range. Always function and safety check on an unloaded rifle after any adjustment.
This is the flat-shoe version, which gives a straight-back pull and a consistent contact point regardless of how high your finger sits. Curved shoes feel more familiar to anyone coming off a standard mil-spec trigger. Fitment is identical either way, so it is purely a question of what your hand prefers - and nothing extra is needed to run it beyond your existing pins.
We send orders from the United Kingdom with £5 tracked UK delivery in 7–10 business days, and tracking is emailed to you when it ships. If the trigger turns out to be the wrong fit for your lower, 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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