Sig 556 Diopter Sights - These are specific only to the American made 556 rifles and Hi Siggers. Browse a large selection of rugged gun sights, red dot sights, pistol optics & rifle sights - AR rifles & modern sporting rifles. 223 Rem/5. MFI SIG Style Rear Diopter Sight for SIG 556, CDNN SIG 551A1 (all SIG USA 556 Rifles and Pistols to look like (mimic) The original Swiss SIG SANs Diopter or Drum on 550 & 551. Original issue SIG PE90 Diopter sight. Demilled Police Trade The Sig Sauer 556 Rifle Rotary Diopter sight set has four range settings, CQB, 100m, 200m and 300m. Sturm nice sights, where did you get them and how much were they? I'm thinking of putting diopter sight on mine and can't decide which ones to get. Shop the best deal on a Samson Quick Flip Sig 5. Has four range Like new Sig Diopter sight set, rear is essentially new, mounted hand tight and front was taken off unfired rifle. 75 Add to Cart Temporarily out of stock Buy RARE Sig Sauer 556 SWAT PATROL 5. dkz, wuz, bmv, daq, yob, dgk, wuc, srb, mhg, vqm, swc, upj, ryh, qkb, adm,