Remington 870 FieldMaster Rifled Barrel 12 Gauge Glass Bead Blast Blued Shotgun

A: Hu Johnny and welcome. They will not run reliably in the 870. The OpSol Mini-Shell adapter is for the Mossberg I believe: https://www.budsgunshop.com/product_info.php/products_id/36595/opsol+texas+miniclip+mini-clip+for+mossberg+500+590+12+gauge+1+round+polymer+black+finish ----------------------------- https://www.msgo.com/threads/mini-shotshells-in-an-870.163382/

A: they will work as a single shot. they will not cycle. no adapter is made for the remington 870

A: yes it is drilled and tapped see *****Receiver milled from a solid billet of steel for strength and durability Fully-rifled, heavy contour barrels deliver devastating knock down power and accuracy For the use of 12 gauge sabot slugs (rifled lead slugs are not designed for fully rifled barrels) *****Receiver drilled & tapped for optic mount. Twin action bars ensure smooth, reliable non-binding action Legendary pointability and accuracy Rifle-like performance in an affordable, dependable shotgun package SuperCell® Recoil Pad Interchangeable Soft Face Comb Enhanced Checkering Texture, Forend and Pistol Grip Stock.https://www.remarms.com/shotguns/pump-action/model-870/870-fieldmaster-synthetic-fully-rifled-deer

A: Hi Steven and welcome. Yes, it is drilled and tapped and "Medium Height" Scope Rings will give you plenty of clearance. The 20 inch barrel would be my personal choice. Cheers, stay safe and enjoy!

A: Yes, this Remington model 870 Fieldmasters Receiver is Drilled & Tapped. I don't see any issue with the scope clearing the front optic whatsoever.