Corn Gunworks Ambidextrous Milspec Active Reset Conversion (MARC)

Corn Gunworks Ambidextrous Milspec Active Reset Conversion (MARC)The Corn Gunworks Ambidextrous Milspec Active Reset Conversion (MARC) is built for AR-15 owners who want an ambidextrous 3-position control system with upgraded materials and a focus on long-term durability. This version keeps the familiar mil-spec style layout while adding ambidextrous operation, with a short left-side lever and longer right-side lever for accessible manipulation. Key wear components are made from properly heat-treated and nitride-coated S7 tool steel and 4140 steel, with rounded edges and refined dimensions intended to improve interaction between components and reduce binding during operation.FeaturesCompared to other similar products on the market, the lever arm of the MARC is: Made of properly heat-treated and nitride-coated S7 tool steel. Proper dimensions on all interacting surfaces, most importantly to prevent binding on the trigger while the hammer is cocked farther back by the bolt. Edges are rounded to prevent crack formation.AMBI MARC-Compatible TriggersThis list is not exhaustive, and inclusion on (or omission from) this list does not guarantee compatibility in every possible configuration. There are many variables involved, and it is not feasible to test every combination.Standard test configurations are as follows: Aero Precision Gen 2 Lower / M4E1 Lower Standard carbine buffer tube with carbine spring and H2 buffer A5 buffer tube with A5 spring and H1 bufferAdditional requirements An M16-cut bolt carrier group (BCG) is required A low-shelf lower receiver is required, or the user must be comfortable modifying their lower to a low-shelf configuration If using a Geissele Trigger, you must have our Geissele Over Travel Stop installed - GeisseleSSATwo StageYES*- GeisseleSSA-ETwo StageYES*- GeisseleS3GSingle StageYES- GeisseleSD3GSingle StageYES- GeisseleG2STwo StageYES*- GeisseleSD-ETwo StageYES*- GeisseleSSAEXTwo StageONLY WITH MODIFICATION YES- DO NOT PURCHASE IF UNWILLING TO MODIFY- GeisseleSSAXTwo StageONLY WITH MODIFICATION YES- DO NOT PURCHASE IF UNWILLING TO MODIFYCMMGMilspecSingle StageNODPMSMilspecSingle StageNOJacob GrayJacob Gray Single StageSingle StageYESMimTacMimTac DrasticSingle StageYESNoveskeNoveske Single StageSingle StageYESPSAPSA EPTSingle StageYESPSAPSA Custom SS Drop InSingle StageYESRise ArmamentRave 140Single StageYESRise ArmamentRA 434Single StageYESRise ArmamentRA 535Single StageYESRise ArmamentRA BlitzSingle StageYESRise ArmamentRA LE145Single StageYESRise ArmamentICONICTwo StageNOSchmid InsideSchmid Two-StageTwo StageONLY WITH MODIFICATION YES- DO NOT PURCHASE IF UNWILLING TO MODIFYSchmid InsideSchmid Pro Line TriggerSingle StageYESSchmid InsideSchmid Inside GI Flat Face SSSingle StageYESSchmid InsideSchmid Inside Match Flat Face SSSingle StageYESSmith DefenseAR15 Lower Parts KitSingle StageYESSons of Liberty Gun WorksSOLGW LFTSingle StageYESSpikes TacticalSpikes ST BattleSingle StageYESTimneyTimney Competition 3LBSingle StageYESTimneyCalvin EliteSingle StateYESHeckler KochHK MR556A1 TriggerSingle StageNO *Marked Geissele 2-stage triggers may require some amount of polishing or small material removal on the top of the trigger shoe tail. This is due to increased trigger shoe travel associated with 2 the two-stage models and tolerance stacking between various parts interacting. These are general recommendations based on our personal experience. Your experience may vary depending on your rifle.Tuning Recommendations 5.56 16" Mid Length Gas- H1/H2 Buffer 5.56 16" Mid Length Gas Suppressed- H2/H3 Buffer 5.56 16" Carbine Length Gas- H2/H3 Buffer or Rifle Length Spring with Carbine Buffer 5.56 11.5" Carbine Length Gas- H1/H2 5.56 11.5" Carbine Length Gas Suppressed- H2/H3 300blk 7.5" Pistol Length Gas- H1 300blk 7.5" Pistol Length Gas Suppressed- H1/H29mm blowback ARsWithout proper tuning will cause premature wear. We will warranty any that deform regardless (excluding negligent retardation), but at this time we strongly recommend a 10+ oz buffer weight or a captured/hydraulic buffer (the heaviest that is available) with the MARC if you're planning on running them with a blowback 9mm. For a tuning guide with full explanations, check out the following video from Blowback9 on YouTube. He is a wealth of knowledge for your AR-"SMG"/AR-PCC needs.In principle, the AMBI MARC operates in a manner similar to other products, but it remains legally and mechanically distinct due to numerous functional, material, and aesthetic improvements. These improvements reflect independent engineering judgment and upgraded material selection, intended to correct what we consider inferior or unreliable implementations found in other products on the market. The MARC design prioritizes durability and long-term reliability. Particularly because, due to the life-saving nature of the systems, they may be utilized in.