Guides
Will it work, and how do I tune it?
Check your trigger, then set your buffer for your exact build.
Before you buyTrigger compatibilityEvery AR-15 trigger we have checked with the MARC and MARC II: drop-in, needs fitting, or not compatible, and where to buy it.
Make it run rightAR-15 FRD Tuning GuidePick your caliber, barrel, gas system and can. Get the buffer to start with, plus fixes for light strikes, reset and lock-back.
More guides
TutorialsMARC INSTALLATIONThis document shows you how to install the Mil-Spec Active Reset Conversion (MARC) and the MARC II.
LegalFRD Legality by StateA running reference on the state-by-state status of forced reset devices, updated as often as legislation does.
TutorialsGeissele 2 Stage Trigger Mod DocumentHere is the document share link for how to modify a geissele 2 stage trigger if needed when paired with the MARC or MARC II
Gear GuidesThe 7 Steps to FRT a 9mm AR (Feat. Blowback 9)All Credit goes to @Blowback9 on youtube for this awesome walkthrough. 
TutorialsGlock FRD InstallHow to install a glock frd kit
TutorialsTX22 FRD InstallTaurus TX22 full breakdown and frd install.
TutorialsInstalling a Super Safety Kit: Step-by-StepHow to install a super safety.
Gear GuidesMARC Won't Fire or Reset in Active Position: Fitting GuideStep-by-step fitting for two-stage triggers with the MARC: trigger-tail relief, disconnector work, and hammer timing, with function checks at every stage.
Gear GuidesLow-Shelf vs High-Shelf Lowers: MARC Fitment & the FixThe MARC and MARC II drop into low-shelf AR-15 lowers. High-shelf lowers need the Super Safety Kit instead. How to identify your shelf type before you order.
Tutorials22LR Super Safety Build Guide: BoreBuddy Parts & TuningComplete parts list for a 22LR Super Safety AR build on the BoreBuddy ecosystem: upper, trip kit, bolt weights, ammo selection, and trip adjustment tuning.
TutorialsSuper Safety Kit Install GuideStep-by-step Super Safety Kit installation guide: content pending.
TutorialsMBT2S+MARC Modification GuideHere is the document share link for how to modify a Larue MBT2S 2 stage trigger if needed when paired with the MARC.
Watch
MARC and MARC II installation
Full install, start to finish.
9mm blowback AR with the MARC
What a 9mm blowback build needs: 10 oz minimum buffer, no spacer in a carbine tube.
Question these don't answer? Email team@copperheadsafety.com with your trigger, BCG and caliber.