HAO's 45° torch mount for HK416 are made from Alloy 6061-T6 bar ,finished with anodizing/cerakoted, Perfectly fit with HK416 Quad Rail/Geissele SMR (HK)Not like others replicas, HAO's 45° torch low-profile mount can fit Surefire 9 series without any modification. And more superior design which could perfectly fit on Geissele HK SMR handguard.Tested:*SFM951*SFM952*SFM300*SFM600*SFM961*SFM962Tested:Genuine Geissele SMR handguard for HK416Genuine Heck&Koch HK416 quadrailGenuine Heck&Koch MR556 quadrail