As you know, we had a Poll about most popular Remington 870 upgrades here: http://www.rem870.com/2012/12/26/what-upgrades-do-you-have-on-your-remington-870-poll/

Let’s see results and what upgrades are really popular.

Stock

It’s not surprising that most Remington 870 owners upgrade factory stock. There are lots of aftermarket stocks available and they offer really good features, some of them adjustable, some reduce recoil etc.

Remington 870 ATI Talon Stock

Remington 870 ATI Talon Stock

So, the most popular Remington 870 upgrades is… Stock, 64% of voters! You can see my post about 5 Five Best Aftermarket Stocks for Remington 870

Magazine Extension

Standard Remington 870 has limited magazine capacity. That is why one of the most popular upgrades is magazine extension.

TacStar Magazine Extension

TacStar Magazine Extension

So, next popular upgrade is magazine extension, read post about extensions here: Magazine Extensions for Remington 870 Shotgun (Nordic Components, Choate, TacStar, Remington, ATI)

Forend

Third most popular Remington 870 upgrade is forend. There are many forend available. You can read following reviews for more information:
Eotech Shotgun Integrated Forend Light for Remington 870 Review

Remington 870 Surefire 618LMG Forend Light Review

Magpul SGA Stock and MOE Forend for Remington 870 Review

Flashlight

Fourth upgrade which is very popular is flashlight. You can read my review of 3 tactical flashlights to know more about flashlight which can be attached to your shotgun.

Follower

Nordic Components Shotgun Follower

Nordic Components Shotgun Follower

Follower is on 4th place. Read more about followers here: Remington 870 Followers Overview (Vang Comp Systems, CDM Gear, SBE Precision, GG&G, S&J Hardware, Scattergun Technologies, Choate, Nordic)

Sling

Sling is o 5th place. Read article about slings here: To Use A Sling or Not With Your Home Defense Weapon

Receiver Mount Shell Holder

Receiver Mount Shell Holder is o 6th place, read more about them here: Overview of the Sidesaddles for Shotguns

Non-MIM Extractor

Remington 870 Non-MIM Extractor

Remington 870 Non-MIM Extractor

Non-MIM Extractor is on 7th place, read more about it here: MIM and non-MIM Extractor for Remington 870 Shotgun

Safety

Vang Oversized Safety for Remington 870

Vang Oversized Safety for Remington 870

Sights

Sights are on 8th place. Safety is on 9th place, read more here: Remington 870 Safety, Wilson Combat (Scattergun Technologies), S&J Hardware, Vang Comp Systems

Barrel

Remington 870 Police Barrel

Remington 870 Police Barrel

Barrel i on 10th place, read more about barrels here: Remington 870 Barrels