b'PSR 5 & 7PSR Flash Hider (Optional) PSR 5Muzzle Brake IncludedMSRP: $144.95LENGTH.8.4, 4.8 addedWEIGHT.14.9oz DB REDUCT.39dB 5.56mmDIAMETER1.5 MATERIAL.H900 & Cerakoted 17-4SS & 718 InconelCALIBER5.56mm MSRP$1,195RATED FOR . Full AutoThe DUAL-LOK mounting system provides high performance attachment, greater user confidence, and a more modern feature set. Incorporating it into the over the barrel PSR series allows for a rigid locking system in an extremely accurate taper interface mount. Rough handling of the firearms muzzle device is not an issue with the PSR cans as there is a redundant support'