Re: Iron Ridge Arms NEW AR-10 D model Uppers.
Made some New changes to the top of the upper, we have a open channel in the center and closed on the ends, I have a few pics coming. looks great,
The New specs for the rail are in the NATO specs, The section of rail that optics hold on to are a bit different then the stnd. type rails, the area of purchase on the contact points are much better then the Stnd. rail config.
BUT all optics and hardware will mount to the new NATO rail type.
Thx IRA Co.