Steel compensator features A2 styling without cuts along the bottom. Flash Hider does not contain the front baffle that reduces rearward recoil. Pre-ban model fits standard AR-15 threaded barrels. Post-ban model features a larger .900" inside diameter and will require installation by a qualified gunsmith. EGW uses Electronic Discharge Machining (EDM) and CNC for the manufacturing of these compensators
Notes:(from the manufacturer)
The shapes and angles achieved by EDM produce a greater surface area for the expanding gasses to push
against. This yields a softer feeling comp for the shooter and less recoil effect. EDM also hardens the surface
which provides longer life to EGW comps... longer than any other comp on the market.