Timney Single-Stage Trigger 667S - AR-15 Small Pin - Curved Shoe
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Drop-in fit for AR-15/M4 pattern lower receivers with small (.154 in) trigger pins. Confirm pin size before ordering.
Not sure it fits your rifle? Ask us before you order
The Timney 667S is a self-contained single-stage drop-in trigger with a curved shoe for small-pin (.154 in) AR-15 and M4 pattern lower receivers.
Timney's modern classic single-stage trigger — the 667S pairs a hand-calibrated break with the curve traditional shooters trust.
The Timney 667S drops a clean, consistent single-stage pull into small-pin (.154 in) AR-15 lowers through a traditional curved shoe. The curve cradles the finger pad and gives instinctive tactile position — the feel generations of riflemen trained on — while the internals deliver Timney's signature: no creep, minimal overtravel, and a reset you feel without hunting for it.
Delivered as a self-contained drop-in module, the 667S installs through your existing pin holes in minutes and arrives exactly as it was calibrated — the same simple promise Timney has kept since 1946.
Drops into small-pin AR-15/M4 pattern lower receivers with .154 in trigger pins, using the existing pin holes — including UK straight-pull AR-15 builds, where a clean single-stage break is a straightforward upgrade over a factory pull. Large-pin receivers are not compatible, so confirm your pin size before ordering. Function-check the rifle before live fire.
| Platform | AR-15 / M4 |
|---|---|
| Fits | Small-pin (.154 in) AR-15 / M4 lower receivers |
| Type | Single-stage drop-in trigger, curved shoe |
| Made in | USA |
| Brand | Timney Triggers |
| MPN | 667S |
The classic feel, Timney precision. Order the 667S 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 Timney Triggers.
| Platform | AR-15 / M4 |
|---|---|
| Fits | Small-pin (.154 in) AR-15 / M4 lower receivers |
| Type | Single-stage drop-in trigger, curved shoe |
| Made in | USA |
| Brand | Timney Triggers |
| MPN | 667S |
| Category | Trigger |
| Shipping weight | 0.5 kg |
| Barcode | 081950667239 |
£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 drops into AR-15 and M4 pattern lowers that use small .154 in trigger pins, which is the common mil-spec size. Large-pin receivers will not accept it, so confirm your pin size before ordering rather than after. If you are not sure, the lower's manufacturer will be able to tell you.
It is a self-contained single-stage drop-in, so the pull is one continuous movement to a clean break with none of the grit you get from a stock mil-spec trigger. Being a sealed unit, the internals stay in alignment rather than depending on how well your pins and springs are seated. It is a sensible general-purpose upgrade rather than a specialist match trigger.
This is the curved-shoe version, which matches the shape most AR shooters already have muscle memory for. The <a href="/products/timney-single-stage-trigger-667s-st-ar-15">667S-ST straight shoe</a> is the same trigger with a flat bow, which gives a consistent contact point and a slightly different feel at the bottom of the face. If you shoot with your finger high on the trigger, the curve usually feels more natural.
A punch and hammer to drive the trigger pins out and back in is normally the extent of it, plus any anti-rotation hardware supplied with the unit. Once in, do a full function check before the rifle is used. For a comparison of the drop-in options we stock, see our <a href="/blogs/buying-guides/ar-15-trigger-guide">AR-15 trigger guide</a>.
Every order is dispatched 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 <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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