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6/17/2006 7:43:59 PM EDT
I just acquired an 870 Police Magnum, it has the 18" barrel and has a mag capacity of 4 (this is not enough )  Who makes  an extended magazine kit (of good quality) and what is the capacity when flush with the muzzle?
6/17/2006 8:57:55 PM EDT
[#1]
You'll need a plus 2 round extension.
This will be flush with an 18" barrel.  This will hold a total of 7 rounds: 6 in the magazine and 1 in the chamber.
Brownell's sell most of the better brands.

Choate is very good, and come with the extension, longer spring, heavy-duty follower, the barrel clamp, and a sling swivel.
www.brownells.com/aspx/NS/store/ProductDetail.aspx?p=4203&title=SHOTGUN+MAGAZINE+EXTENSION
For your gun, you'd need #159-102-870 for a blued gun or #159-104-872 for a parkerized Police gun.

The Tac-Star isn't as good quality and you have to buy the barrel clamp extra.
www.brownells.com/aspx/NS/store/ProductDetail.aspx?p=13101&title=SHOTGUN+MAGAZINE+EXTENSION

The Wilson is very good, but also doesn't come with a clamp.
www.brownells.com/aspx/NS/store/productdetail.aspx?p=12526&s=29838

There are more expensive units like the Hans Vang, Remington factory, and Tank's Rifle Shop versions.
These cost about $80.00 or more.

Whatever you buy, USE A CLAMP.  An unsupported extension can be knocked off the gun, ruining the gun's magazine tube threads and costing an expensive trip back to the factory for replacement.
6/17/2006 9:24:47 PM EDT
[#2]
Thank you, the Choate looks good. Are the dimples on the mag tube a problem with the Choate unit?
6/18/2006 5:55:11 AM EDT
[#3]
If you have a "Police Magnum" there are no dimples.
6/18/2006 8:22:59 AM EDT
[#4]
No dimples. Thats great, Im starting to like this gun all ready.
6/18/2006 4:31:48 PM EDT
[#5]
When you buy the Cadillac instead of the Chevy, you get extras.

The Police Model 870 is the finest defensive pump gun in the world.
6/23/2006 2:58:29 PM EDT
[#6]

The Police Model 870 is the finest defensive pump gun in the world.


The only truth more self-evident is the fact that John Moses Browning is God's gunsmith.
6/23/2006 3:39:02 PM EDT
[#7]
you need this...
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