The 1.735” diameter fits flush with our Nomad Series, while the 1.5” diameter is a perfect width for our Sandman Series and Wolverine.
They are cross compatible, so don’t think too hard about it. Many people like the wider diameter on their Sandman as they report it helps keep their suppressor cover from sliding forward. For those that don’t have that problem, go with what looks best to you, as their functionality is identical.
Install is easy. Just remove your existing front cap and install it on the front of the E-Brake, then thread the E-Brake on to your silencer. Next, enjoy a flatter shooting rifle.