*NEW MACHINED RAIL WITH MULTIPLE MOUNTING SLOTS to fit a larger variety of scopes If you are looking for a scope mount for your M-11 & MPA mid size OEM upper, then this is for you! It is a machined billet mount that slides onto your stock upper providing a 3.25" multi slotted rail to mount almost any optics. Also offers (2) M4 threaded holes on top. The mount is small enough that it provides ample space for the upper charging handle to move freely and lock the bolt back. Tightens securely with 6 non protruding cup finish screws on both sides and includes an Allen wrench. Loctite is recommended. Finished in flat black anodize. Weighs just 7 ounces (gun & other parts sold separately) Fits larger MPA 9mm,**Does NOT fit MPA mini 930.