The 1187 is a safety modified Reminton 1100. The safety was changed in 1987, hence the model number change from 1100 to 1187.
100-500
50-500 USD depending on specifics
Depending on the model and condition 100-2500 USD
NO! The 1187 barrel was for remington shotguns,the auto-5 shotgun is a browning shotgun.
NO, DO NOT ATTEMPT TO DO SO!!!!!!!!!!!!
.Manufacturer suggested retail price was$ 932.00 its worth 750.00 in 100% condition $275.00 in 60% condition.
50-500 usd
priceless
If you go to Remington's web site, you can request one or download one.
300 or so
IMHO you would be better served by ordering a replacement manual for free on the Remington site.