Short version - I'm looking for a set of springs for a benchmark single trigger frame. Is there a good source for a selection besides ID? And does anyone know what valve this is, so I can replace the seat & poppet o-ring?
Long version - I’m running a Benchmark frame on an Oracle Mini and chasing a lighter trigger pull.
This started because the existing valve (unknown manufacturer) began leaking intermittently. I couldn’t identify it or source a replacement seat or poppet o-ring, so I decided to re-valve and re-spring the marker while I was in there.
On the frame side, the trigger geometry and friction were already addressed years ago:
Last week I ordered a full spring kit from Inception Designs. The sear springs included are clearly not a purpose-matched set:
As-received, none of the ID springs will hold the sear up without stretching or stacking, which obviously isn’t ideal. Attached is a pic of the ID spring set next to the spring that's been working for me. Also, the valve I don't know where to get parts for.
Question:
Is this a known issue with current off-the-shelf sear spring kits, or is the Benchmark frame geometry expecting a longer / larger-OD spring than what’s commonly supplied now? is there a better source for proper frame springs? Does anyone recognize this valve or know the manufacturer so I can rebuild it?
Long version - I’m running a Benchmark frame on an Oracle Mini and chasing a lighter trigger pull.
This started because the existing valve (unknown manufacturer) began leaking intermittently. I couldn’t identify it or source a replacement seat or poppet o-ring, so I decided to re-valve and re-spring the marker while I was in there.
On the frame side, the trigger geometry and friction were already addressed years ago:
- Frame cleaned and stoned
- Shocktech stainless trigger plate
- FreeFlow roller sear
- Brass-tipped set screws
- ~0.002" PTFE shim between frame and body
Last week I ordered a full spring kit from Inception Designs. The sear springs included are clearly not a purpose-matched set:
- Mixed finishes (not an issue)
- Different wire diameters (not an issue)
- All are too short to function as-supplied (definitely an issue)
- Existing sear spring (works): ~1.55" length × ~0.300" OD
- ID’s three softest sear springs: ~1.10" length × ~0.250" OD
- Measured distance from spring seat to sear underside: ~1.20"
As-received, none of the ID springs will hold the sear up without stretching or stacking, which obviously isn’t ideal. Attached is a pic of the ID spring set next to the spring that's been working for me. Also, the valve I don't know where to get parts for.
Question:
Is this a known issue with current off-the-shelf sear spring kits, or is the Benchmark frame geometry expecting a longer / larger-OD spring than what’s commonly supplied now? is there a better source for proper frame springs? Does anyone recognize this valve or know the manufacturer so I can rebuild it?
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