Remington 1187 Sportsman 12 Gauge Shotgun

A: This has a 3" chamber.

A: Christen, this shotgun has a 3" Chamber. (Complete Specifications and Features): - 12 gauge - Semi automatic - 26" vent rib barrel - 3" chamber - 4 rounds capacity - Accepts RemChoke tubes (modified included) - Single bead sight - Black synthetic stock - Solid steel receiver - Length of pull 14" - Drop at comb 1.5" - Drop at heel 2.5" - Overall length 46" - Weight 8.125 lbs - Matte black.

A: Adam, yes it is. It has a screw in RemChoke tube "Modified".

A: yes it is a removable Rem choke

A: Adan, The term Rem-Choke" indicates that it is Remington's Trade Name for it removeable choke system. You can purchase Remington branded and/or other compatible third party chokes in other choke configurations for this shotgun.

A: Yes Sir, they use the same Rem-Choke choke tubes.

A: yes it uses the same rem choke as your 870

A: John, yes Sir it does use Gas Operation. The self-cleaning pressure-compensating gas system delivers reliable shell cycling with virtually any load.

A: Yes, John, it is, and the one I have has cycled flawlessly since I got it, 14 years ago. Remington does make a good auto loading shotgun.

A: Joshua, no Sir, the 1187 is not "Drilled and Tapped" for Optics mounting.

A: It is not Drilled and tapped specs Specifications and Features: 12 gauge Semi automatic 26" vent rib barrel 3" chamber 4 rounds capacity Accepts RemChoke tubes (modified included) Single bead sight Black synthetic stock Solid steel receiver Length of pull 14" Drop at comb 1.5" Drop at heel 2.5" Overall length 46" Weight 8.125 lbs Matte black the best way to mount a scope to a remington 1187 is with a saddle mount like this link https://www.budsgunshop.com/catalog/product_info.php/products_id/22714/b-square+saddle+mount+w%2frings+for+remington+1100%2f1187

A: Only one, Accepts RemChoke tubes (modified included). Hope this helps.