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Butstock Mill-Spec or Commercial?



Both are handguard rail systems for attaching a variety of accessories such as grips, weapon lights and lasers. 

RAS (Rail Accessory System) Is free floating one or two part. It has a nut that threads directly onto the receiver after removing the delta ring assembly. Usually but not always numbered: T-L-R-B (top-left-right-bottom)14 - 28

RIS (Rail Interface System) uses the delta ring and clamps to the weapon. T-L-R-B (top-left-right-bottom) in odd numbers 1 - 13





Switchview Throw Lever Installation Guide. >

Rifleworks Ltd. Company No. 07660768 01325 506013

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