The 878 was discontinued in 1962
its a Remington model shotgun(semi auto)
That would not generally be considered a valuable modification. It is worth what you can get for it.
Remington never made a model 380 rifle, no model number even resembling that in 22.This is from Remington's page for semi-auto rimfires...Mohawk 10CModel 16Model 24Model 241Model 550Model 550-1Model 552Model 522 ViperModel 597Nylon 66Nylon 77
Yes
Is this a model 11 Remington? Please re-ask under the Remington classification
http://stevespages.com/ipb-remington-51.html
No my only reference to the model 597 Remington is for a 22lr semi-auto rifle.
no
50-200
No
No
NO! The 1187 barrel was for remington shotguns,the auto-5 shotgun is a browning shotgun.