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Sage International, Ltd. M14 EBR stock - The USGI front band is not used and there is no replacement front band. Instead, a shim or crush washer is used as a spacer between the barrel shoulder and the gas cylinder as pictured above. Most Sage M14 EBR stocks have a barrel tenisoning screw but there are some that do not, e.g., U. S. Marine Corps M39 EMR stocks (late second generation Sage version). The USGI operating rod guide is replaced with a Sage operating rod guide.

Troy MCS - The MCS Mod 0 and Mod 1 stocks have a barrel band guide that replace the USGI front band. The Mod 0 stock has a barrel tensioning screw, the Mod 1 stock does not. The USGI operating rod guide is retained.

JAE-100 - The G1, G2, and G3 stocks retain the USGI front band. There is no provision for a barrel tensioner on the G1 stock but it is an option for the G2 and G3 models. The USGI operating rod guide is retained.

 

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Is that correct? All the Mod 1's I've seen have it...

Both the Mod 0 and Mod 1 stocks have the twin tension screws for the firing mechansim but the barrel tensioner was omitted on the Mod 1 stock.

References: 1) Troy Industries MCS Mod 0 manual 2) Troy Industries MCS Mod 1 manual 3) correspondence with LAW483.