This is the Industry Brand Field Rear Sight as supplied with the AR2078/9 series of rifles. Fits most air rifles with standard 3/8-inch scope rails without a "hump" between the rails. The sight provides click adjustment for elevation and windage.
This sight was also supplied with the QB6 and some B3 air rifles and is a direct replacement for use on those guns.
This versatile rear sight fits a number of different airguns, including the following models:
- IZH60 and IZH61 air rifles
- Crosman 1322, 1377 and 2240 air pistols with steel breech
Archer Airguns is now supplying this sight with an additional sight leaf screw. This is because the factory screw is too long and can interfere with correct fitting onto scope rails. The replacement screw is the correct length but requires a touch of black paint to blend in properly.
Does NOT fit the QB78, QB78 Deluxe and QB79 models unless these are also fitted with the Archer Airguns AR Breech Kit. This is due to the curved breech projection above the scope rails milled in the breech of these guns. Some customers have also found that this sight causes their 1377 or 2240 pistols to shoot high - particularly at short range - although most don't have this issue. A couple of solutions to this are described in these blog posts: