I should probably clarify that. Both A1 and A2 GI issue rifle length hand guards will normally fit the triangular end cap. Some makers install only the triangle end caps which makes it easy to swap for the style you prefer. If you have the round end caps, only the round fore ends will work unless you change the endcap. This requires removing the flash hider and front sight block as well as ensuring you have the correct hole to fit your barrel diameter.Information
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