Your Browser is OutdatedQ&A for Tasco Red Dot 1x30mm 5 MOA Matte Rifle Scope BKRD3022 Tasco 1x30 — 10 Questions & 10 Answers
This scope can be used for .22 rimfire, shotguns using up to 3" shells, and handguns up to .357 magnum.
Yes, it should.
Yes, but this will only work if you have a 3/8" dovetail on your gun.
For replacement parts, please contact the manufacturer. Their contact information can be found here: http://www.tasco.com/pages/contact-us/
It will not without some sort of rimfire dovetail adapter. This specific Tasco mounts to a .22 grooved rimfire receiver. If you have a Mark IV with a picatinny style rail you will want this Tasco instead which is the same red dot, but with a picatinny style mount instead: https://www.opticsplanet.com/tasco-1x30-reddot.html
This specific Tasco model mounts to a rimfire dovetail and will not mount to an AR. You would instead want this Tasco red dot: https://www.opticsplanet.com/tasco-1x30-reddot.html
It should fit your Marlin 989 M2 as long as the top of your receiver is grooved.
This red dot is NOT airgun rated.
This will only fit on a dovetail rail, your Ruger Charger does not have a dovetail, so it is not mountable.
That would depend on what generation of AR-7 you have. If you have the older version with the 3/8" dovetail on top, this will fit. If you have the newer version with the weaver rail on top of the receiver, this will not fit.