Timney Single-Stage Trigger 667S-ST - AR-15 Small Pin - Straight Shoe
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 small (.154 in) trigger pins. Confirm pin size before ordering.
Not sure it fits your rifle? Ask us before you order
The Timney 667S-ST is a self-contained single-stage drop-in trigger with a straight shoe for small-pin (.154 in) AR-15 and M4 pattern lower receivers.
Single-stage trigger certainty with a straight shoe — the 667S-ST is Timney's modern classic for small-pin ARs.
The Timney 667S-ST drops a clean, hand-calibrated single-stage pull into small-pin (.154 in) AR-15 lowers through a straight trigger shoe. The straight profile encourages a lower finger position and a press that drives straight to the rear — mechanics that many shooters find improve their groups — while the self-contained drop-in module guarantees the pull arrives exactly as Timney tested it.
No creep, minimal overtravel, positive reset: the fundamentals executed at the standard Timney has maintained since 1946, in the easiest install format the AR-15 world offers.
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 the straight shoe and low finger position suit deliberate, aimed shooting. 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, straight shoe |
| Made in | USA |
| Brand | Timney Triggers |
| MPN | 667S-ST |
Fundamentals, cleanly executed. Order the 667S-ST 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, straight shoe |
| Made in | USA |
| Brand | Timney Triggers |
| MPN | 667S-ST |
| Category | Trigger |
| Shipping weight | 0.5 kg |
| Barcode | 081950667505 |
£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's a drop-in single-stage unit for AR-15/M4 pattern lowers built with small .154 in trigger pins. Large-pin receivers won't accept it, so confirm your pin size first. If your receiver's specification isn't clear, contact us with the make and model and we'll help you check.
A single-stage has no take-up stage: you press and it breaks at one point, which many shooters find quicker and simpler under time pressure. This is the straight-shoe 667S-ST from Timney's AR line, supplied as a self-contained drop-in unit and made in the USA. Our data doesn't list a published pull weight for this model, so ask us if you need the figure.
A flat, straight bow means your finger meets the trigger in the same place whatever your grip depth, which helps consistency across positions. The <a href="/products/timney-single-stage-trigger-667s-ar-15">curved shoe 667S</a> is the same trigger with a traditional bow if you prefer that feel. Both are small-pin parts, so the pin check applies either way.
No, it uses the trigger and hammer pins already in the receiver, and nothing further has to be bought. Fitting is ordinary trigger group replacement followed by a careful function check. If you'd like to compare it against other brands, our AR trigger buying guides are a good starting point.
It's dispatched from the United Kingdom with £5 tracked UK delivery in 7–10 business days, and tracking comes by email at dispatch. If the pin size or fit turns out to be wrong, 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.
Why Onyx Armaments
