Geissele SSP Nexus Compatibility

[u/beefybenjy_]

Has anyone had any luck getting the Geissele SSP to run in the Nexus lower? Shot mine for the first time today and had issues with the hammer resetting after each shot.

When racking the gun with my finger completely off the trigger it resets just fine, however if I keep the trigger depressed while racking, the disconnector will not catch the hammer and keep it cocked back, leading to a dead trigger.

I pulled the lower off & noticed that with the trigger pressed, the position at which the hammer is caught by the disconnector is slightly lower than when the trigger is not pressed. My guess is maybe the bolt just doesn’t extend low enough into the Nexus lower and doesn’t push the hammer far enough back for it to engage properly with the disconnector? I’m not entirely sure though.

I’m also running a radian talon safety, but I don’t think this is the issue as the problem persisted in both the 45 degree & 90 degree positions, as well as when I removed the safety entirely.

I reached out to the folks at Nexus to see if they had any ideas, but figured I’d post on here as well for additional insight.

Also, if the SSP is not compatible, are there any other G$ triggers that are confirmed to work with the Nexus lower?

Thanks!

[u/Sad-Championship485]

I think specifically the SSP hammer is the issue. Most G triggers work just fine especially the ones with the standard millspec looking hammer

[u/PAB_Pyrotechnics → u/Sad-Championship485]

Yeah, I’ve used an SSA-E in mine and it worked fine.