No, this should not cause any interference with your bayonet lug.
The FAB Defense NFR Carbine Length M16 Aluminum Quad Rail will not include a delta ring assembly. We do carry them separately, such as the Tiger Rock AR-15 Delta Ring Kit w/ Delta Ring, Snap Ring, Weld Spring & Barrel Nut, which can be found by using the link below:
https://www.opticsplanet.com/tiger-rock-ar-15-delta-ring-kit-with-delta-ring-snap-ring-weld-spring-barrel-nut.html
The FAB Defense NFR Carbine Length M16 Aluminum Quad Rail should work with that upper receiver.
The FAB Defense NFR Carbine Length M16 Aluminum Quad Rail is designed to fit carbine length gas systems using a D-Ring and fixed front sight/railed gas block. I would recommend emailing us at Techsales@opticsplanet.com and let us know your pistol brand and model so we can find a suitable handguard for your build.
Yes, these will work with your m4A3.
Yes, it will work with your DPMS Oracle.
Yes, this rail will work on your M&P Sport 2.
Yes, this handguard will work with your Bushmaster.
Yes it will. The Ruger 556 has a proprietary delta ring which may make installation difficult and minor fitting may be required.
Yes, this will fit the M&P Sport 2.