I have seen plenty of Police Magnums with Smooth Bore and Rifle Sights but again can't be sure with this add... Police Model will have Aluminum Trigger assy and Steel Ejector not MiM...
"Improved Cylinder" may be an indication that it is Smooth Bore...

 

It looks like it is a smooth bore yes, but is that improved cylinder fixed like a regular cylinder? Because if it's fixed and can't be changed to cylinder than i don't get a full spread i want for SD. As for those "rear" rifle sights, they don't make a lot of sense on a smooth bore shotgun. Those things really bother me, so i'd greatly appreciate a help from those who own this model. I wouldn't want to regret a purchase. So far i am choosing between this model and a Mossberg 590 Marine. Tough choice.

 

At home defense distances, I would not worry about CYL vs. IC. IC may be a little more accurate with slugs.
Just ask the seller what it actually has.

Jim

 

There are 2 marine magnum, regular and police. The police model has rifle sights, both are smooth bore. I have the police model.

 

Thanks for reply. So this seems to be the same model that i intend to buy. Does it have cyl bore or improved cyl bore? What about trigger assembly, is it polymer or aluminum?

I really appreciate your help.

 

I’m pretty sure it’s IC, trigger assemble is metal. I modded mine with collapseable stock, surefire foreend, trijicon nitesights, and a shell holder.

 

Nice. How is it with reliability? Then i will probably pick this model over Mossberg 590 mariner. I hope i'll make a right decision. I've heard alot of bad stuff about newer Freedom Group era Remingtons, but i hope Marine magnums stayed the same quality.

Thanks again, have a nice weekend.

 

I just purchased a new one 870P. Its cylinder not improved, smooth bore. Has those rifle sites, I could take or leave. The trigger group is metal not plastic, and the extractor is non mim. Its been good so far probably 200 rounds through it with no failures. My wingmasters are smoother. This feels like its basically a nickel plated express with a few better parts.

 

How do you mean smoother, the action cycle? Does the forend rattle? I still can't totally decide between this and Mossberg 590 Mariner, but Remington 870P feels and looks better made. I have 3 more days to decide.

 

Forgot I also added the Magpul barrel clamp and Wilson Combat oversize safety.

 

All Right... Way to go... On the Bolt Lock-up... I'll check mine when I get home... Looks normal but I'll see if I can get a picture of mine for you.

I did get my new Police Barrel in and tested... I did also replace my (mim) extractor with the steel one but yours looks steel for sure...

I just started loading for 12ga btw and is going well... Lotsa fun...

Thanks

 

Just checked. Gap = normal.
Now go run 500 shells through it.

Jim

 

Just checked. Gap = normal.
Now go run 500 shells through it.

Jim

Cool. Sou you can push forward and back the forend in the forward lock position for a tiny amount (the difference in the bolt-chamber gap is shown on my two pics) on yours too? Then it must be designed this way on purpose.
I will sure break mine with some 3" nitro turkey magnums, 000 buck and high vel slugs. Can't wait

Thanks for the post, i appreciate very much.

 

I am checking my 870 Comp. (Early 80s high end trap gun) The other 4 are further in the safe.
Yes the gap is there. The barrel goes all the way through to the bolt.
Yes I have a tiny amount of wiggle (front to back) when locked.

Jim

 

I am checking my 870 Comp. (Early 80s high end trap gun) The other 4 are further in the safe.
Yes the gap is there. The barrel goes all the way through to the bolt.
Yes I have a tiny amount of wiggle (front to back) when locked.

Jim

Thanks. I'm guessing they made this way on purpose so that some thicker rimmed shells (usually from european makers) can be fired without FTF.

 

So, today i went on another range session with my new 870P, i've shot 50 rds of 00 buck, 25 rds of slugs and 10rds of 3" buck. All went fine. But then i went home and cleaned the barrel, (it wasn't that dirty) and when i looked at the muzzle under the room light, i've noticed this strange grey and black spots. The barrel is clean of residue, so that must be something else1. And the shotgun has less than 150 rds through it. What could these spots be? Is that normal? Btw it only shows under the lightbulb or flashlight, not under natural daylight.

 

Nothing to worry about. Appears to be some minor lead deposits...small streaks of lead inside the muzzle & likely some on the muzzle face as well. Rifled slugs usually make a mess of my shotgun's bore. Nothing a bristle/tornado brush won't remove.

 

Thanks. I do have a brass brush but i was afraid to use it so i do not damage anything. What i don't have is a boresnake. Maybe that would do the job. I tried with hoppes 9 and regular nylon brush, but that didn't do the trick.
Thanks for reply, i appreciate it.