Bix'n Andy Trigger Action Compatibility Chart
A Bix'n Andy trigger bolts into any Remington 700-footprint action, but how well it works depends on one small dimension: how high the cocking piece sits above the trigger's front dowel pin. That gap decides which top sear (Low 3.6 mm, Medium 3.8 mm or High 4.0 mm) gives your rifle safe, consistent sear engagement. Find your action in the table below. It shows the gap measured on real actions, in millimeters and inches, and the sear that suits that number. Individual actions vary, even within the same model, so treat this as a starting point. Measure your own action, and check with us or with Bix'n Andy before you order.
How to read the chart
- Measured gap: the vertical distance from the top of the trigger's front dowel pin to the top of the cocked cocking piece, with the bolt closed and the trigger removed.
- Suggested top sear: the sear height that suits that gap. Bix'n Andy ships every Rem 700-pattern trigger with the Medium 3.8 mm sear.
- Rough guide: a gap under about 4.0 mm calls for the Low sear, about 4.0–4.7 mm suits the standard Medium sear, and about 4.8 mm and above calls for the High sear.
- These figures apply to all Remington 700-style Bix'n Andy models, including TacSport, TacSport Pro / PRO-X and Competition.
| Action | Measured gap (mm) | Measured gap (in) | Suggested top sear | Notes |
|---|---|---|---|---|
| ARC Nucleus | 4.13 mm | .163" | Medium 3.8 mm (standard) | – |
| Badger Ordnance | 4.12 mm | .162" | Medium 3.8 mm (standard) | – |
| BAT B | 4.58 mm | .180" | Standard (no measuring needed) | BAT actions take the standard top sear. |
| BAT Neuvo | 4.50–4.55 mm | .177–.179" | Standard (no measuring needed) | BAT actions take the standard top sear. |
| BAT TR | 4.62 mm | .181" | Standard (no measuring needed) | BAT actions take the standard top sear. |
| BAT VR | 4.65 mm | .183" | Standard (no measuring needed) | BAT actions take the standard top sear. |
| Big Horn SR2 | 4.29 mm | .169" | Medium 3.8 mm (standard) | – |
| Big Horn TL3 / SR3 | 3.89 mm | .153" | Low 3.6 mm | Lowest measurement on the chart. |
| Curtis Custom | 4.60 mm | .181" | Medium 3.8 mm (standard) | – |
| Defiance Deviant | 4.34–4.68 mm | .171–.184" | Medium 3.8 mm (standard) | Samples varied by about 0.3 mm. |
| Seekins Havak | 4.02 mm | .158" | Medium 3.8 mm (standard) | Near the low/medium boundary. Please measure. |
| Impact Precision | 4.29–4.71 mm | .169–.186" | Medium 3.8 mm (standard) | Widest spread of any action checked. Please measure. |
| JJROCK Supper XL | 4.00 mm | .157" | Medium 3.8 mm (standard) | Near the low/medium boundary. Please measure. |
| Kelbly Atlas Tactical | 4.29 mm | .169" | Medium 3.8 mm (standard) | – |
| Lone Peak Arms Fusion Peak | 4.29 mm | .169" | Medium 3.8 mm (standard) | – |
| Lone Peak Arms Razor | 4.20 mm | .165" | Medium 3.8 mm (standard) | – |
| Mausingfield | 4.19 mm | .165" | Medium 3.8 mm (standard) | – |
| Panda F-Class | 4.24 mm | .167" | Medium 3.8 mm (standard) | – |
| Remington 700 (factory) | 4.00 mm | .157" | Medium 3.8 mm (standard) | Single sample on the boundary. Factory 700s vary, so measure before ordering. |
| Stiller TAC30 | 4.24 mm | .167" | Medium 3.8 mm (standard) | – |
| Surgeon | 3.97 mm | .156" | Low 3.6 mm | Just under the low/medium boundary. Please measure. |
| Vudoo (22 LR) | 4.69 mm | .185" | Medium 3.8 mm (standard) | Rimfire action. |
| Zermatt RimX | Not published | – | Low 3.6 mm (required) | Rimfire action. No measurement was published, but the source states it needs the low sear. |
Ranges show the spread across several samples of the same model. On a phone, swipe sideways to see the full table.
Key notes & FAQ
Why does the top sear height matter?
If the cocking piece sits too low relative to the sear, closing the bolt pushes the sear past the end of its travel. If it sits too high, there is not enough engagement and the cocking piece may not hold. The right sear puts your action in the middle of the safe window. After installing the trigger, always cycle the bolt firmly several times and confirm that the cocking piece holds every time.
My action isn't listed, or sits close to a boundary. What now?
Measure it. With the trigger out and the bolt closed and cocked, measure vertically from the top of the front dowel pin to the top of the cocking piece. Calipers or a depth gauge work well. Send us the number and your action model, and we will confirm the sear before you order.
Do BAT actions need measuring?
No. Every BAT action checked works with the standard top sear that comes in the box.
Right hand or left hand?
The hand option sets the side of the top safety. Pick the side that matches your action and stock. For left-hand configurations, contact us to confirm availability.
Single-stage or two-stage?
Both share the same housing and footprint, so action compatibility is the same. A single-stage gives one clean break. Bix'n Andy rates the TacSport PRO-X adjustable from about 3.5 oz to 2.2 lb. A two-stage adds a defined take-up before the wall, and many prone, F-Class and ELR shooters prefer it. Choose by feel and discipline, not by action.
90-degree shoe or Gator shoe?
Both are factory options and do not affect fit. The 90-degree shoe is a straight blade for a consistent finger position. The Gator shoe is shaped and textured for more grip and a different contact point. Many PRS and NRL shooters use either one, so it comes down to personal preference.
What about the safety and bolt release?
The TacSport family uses a top safety, and the safety lever and bolt release are removable. If your action uses its own bolt stop, or your stock or chassis needs a particular layout, tell us your setup and we will confirm the right configuration.
Is this a drop-in install?
For Remington 700-footprint actions, yes. Bix'n Andy still recommends installation by a qualified gunsmith. Never install or remove a trigger with ammunition in the rifle.
Ready to upgrade?
Shop the Bix'n Andy TacSport PRO-X in single- or two-stage with a 90-degree or Gator shoe, or see the full Bix'n Andy range at Precision.Werk. Not sure which sear your action needs? Send us your measurement and action model, and we will help you get it right the first time.
Measurements are reference values taken from individual actions and may not match yours. Always verify fit and function before use. Bix'n Andy is a trademark of its respective owner.
