Gives you additional magazine capacity in only a minute. Quick and simple to install and remove. Threaded tube replaces magazine cap screw. Perfect for Shotgun Action Shooting events or Law Enforcement. Sling Swivel Clamp secures extension to the barrel for extra support. Provides a convenient front mounting point for carry strap or sling.
SPECS: Extension - Steel, blued or parkerized, matte finish. 12 ga. only. Includes extended spring, follower and swivel clamp. Sling Swivel Clamp - Blued or parkerized steel, front and rear 1" swivel rings with studs. Chart indicates number of ROUNDS (RDS) in addition to factory magazine capacity for each model. 20ga. Rem. fits small frame 20ga. guns only and any indentions on the magazine tube with have to be removed for proper functioning.
More...
Customer ratings for CHOATE REMINGTON 870 BLUE MAGAZINE EXTENSION, 4 RDS
Number of ratings: 9
From brownells.com: 9
Average rating: 4.9
Installation tricky(17/05/2013)
This kit will extend the 4+1 Rem 870 shot magazine to 9+1. The trick to successful installation is grinding the stop in the Rem magazine smooth. Otherwise the stop will catch upon loading shells. Dremel grinder will do the job...grind slowly...
Quality(17/07/2009)
Got this for my 21" youth h/d rig. excellent product fits like it should stronger than the gun itself by far, spring and follower are WAY better than factory. Like a total overhaul to the loading system. Plus it has the sling mount, bonus. Get this, you will not be disapointed.
As I expected from Choate(15/10/2009)
Attached to my Rem 870 express 20 ga. The tube construction is of heave guage steel,very solid. Comes with a generous magazine spring replacement. can be trimmed to length. Nice Mag/barrel clamp with sling attachment. No instructions. Simple application though. Over all very good product. I would buy it again.
Good product(24/10/2009)
I was a little skeptical at first, but at the end of the day I was pleased with this product. It is perfect with a 20" bbl. Solid mount. Make sure you have the spring and detent (available from Brownell's) on the barrel lug, as it will not work right with the plastic end cap retainer that comes with the 870 Express model. This should be intuitive, because you have to drill out the two impressions in the 870 mag tube in order for shells to pass into this extension tube. I put a bake-on coating on this item, baked it at 315F, and the plastic plug was unfazed. I like it!
Great upgrade(11/03/2010)
It took nearly five minutes to install the extension on an 870 Express not burdened with the internal ratchet system that would require drilling or grinding out the detents in the magazine tube. That included cleaning all the reddish-brown grease out of the extension.
The finish matches the matte finish of the shotgun fairly close. The tube threads down as tightly as the magazine cap it replaces without any slop. It seems to be more dent-proof than the factory tube. The provided clamp locked up well on the 20" tapered barrel and larger-diameter extension tube behind rifle sight ramp. The three-round tube extends out exactly to the muzzle. Choate also includes an orange, plastic follower that is an improvement over the short, flimsy factory part.
Minor points: The extension doesn't come with instructions, and the clamp doesn't ship with hardware that would allow one to do away with the attached sling swivel loop if not needed.
WORKS GREAT(30/10/2010)
Purchased this for my 870 youth 21" barrel, 20 gaand it works perfect. Removed the detents, installed barrel,orange shell follower into spring, extension onto the magazine, then the provided clamp and done! Increased capacity to 7 & 1. Cycles great without cutting spring, extends to about 1" less than the barrel.
How to get the edge on the bad guys(15/12/2011)
So simple to add on (even on the newer version) to the reliable 870 series of shotguns. Take that plug out, pop in the new spring and screw on the extension. You're now ready to surpise the intruder with an extra 3 shots just in case they decided to hold a family reunion at your home. Don't let them get away with it. You can load a few light loads of bird shot and follow up with good old buck shot if they don't get the hint. With the extension you don't have to worry about reloading so often. Some extra rounds in a butt stock holder and you're ready for swarms of bad guys or zoombies, whichever haunts your quiet neighborhood. Price is less than the Remington stock one and these extensions work just as well, if not better! I have them on all my 870s, both 12 Ga. and 20 Ga..
Pleasantly Surprised(14/03/2012)
Like another user, I bought this to fit my 870 Youth 20 gauge, FYI its built on a smaller frame than the 12 gauge 870. Wanted a home defense/truck gun. I was nervous because I have never bought a Choate product, but I was not dissapointed.. The extension is beefy beyond all reasonable expectations. The clamp that comes with it is utilitarian, it works but I may replace it in the future, it also has a sling attachment point but I don't have a sling on this, so its useless to me so far. The locking collar/nut on the tube matched the matte finish on my gun but the tube itself is nicely blued. Not a big deal to me. The mag spring seems kind of cheap I may also replce it, we will see. All in all I am pretty happy with it so far.
This is a great product.(07/03/2014)
Five minute installation on my 18.5", Rem 870, lightweight, 20-gauge. Perfect fit!
Made in USA
US export classification: 0A502
This item is controlled by the U.S. government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. It may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.
Product no.: 159000009 CHOATE REMINGTON 870 BLUE MAGAZINE EXTENSION, 10 RDS Mfr Part: 01-04-35 Gives you additional magazine capacity in only a minute. Quick and simple to install and remove. Threaded tube replaces magazine cap screw. Perfect for Shotgun Action Shooting events or Law Enforcement. Sling Swivel Clamp secures extension to the barrel for extra support. Provides a convenient front mounting point for carry strap or sling.
Gives you additional magazine capacity in only a minute. Quick and simple to install and remove. Threaded tube replaces magazine cap screw. Perfect for Shotgun Action Shooting events or Law Enforcement. Sling Swivel Clamp secures extension to the barrel for extra support. Provides a convenient front mounting point for carry strap or sling.
SPECS: Extension - Steel, blued or parkerized, matte finish. 12 ga. only. Includes extended spring, follower and swivel clamp. Sling Swivel Clamp - Blued or parkerized steel, front and rear 1" swivel rings with studs. Chart indicates number of ROUNDS (RDS) in addition to factory magazine capacity for each model. 20ga. Rem. fits small frame 20ga. guns only and any indentions on the magazine tube with have to be removed for proper functioning.
More...
Customer ratings for CHOATE REMINGTON 870 BLUE MAGAZINE EXTENSION, 4 RDS
Number of ratings: 9
From brownells.com: 9
Average rating: 4.9
Installation tricky(17/05/2013)
This kit will extend the 4+1 Rem 870 shot magazine to 9+1. The trick to successful installation is grinding the stop in the Rem magazine smooth. Otherwise the stop will catch upon loading shells. Dremel grinder will do the job...grind slowly...
Quality(17/07/2009)
Got this for my 21" youth h/d rig. excellent product fits like it should stronger than the gun itself by far, spring and follower are WAY better than factory. Like a total overhaul to the loading system. Plus it has the sling mount, bonus. Get this, you will not be disapointed.
As I expected from Choate(15/10/2009)
Attached to my Rem 870 express 20 ga. The tube construction is of heave guage steel,very solid. Comes with a generous magazine spring replacement. can be trimmed to length. Nice Mag/barrel clamp with sling attachment. No instructions. Simple application though. Over all very good product. I would buy it again.
Good product(24/10/2009)
I was a little skeptical at first, but at the end of the day I was pleased with this product. It is perfect with a 20" bbl. Solid mount. Make sure you have the spring and detent (available from Brownell's) on the barrel lug, as it will not work right with the plastic end cap retainer that comes with the 870 Express model. This should be intuitive, because you have to drill out the two impressions in the 870 mag tube in order for shells to pass into this extension tube. I put a bake-on coating on this item, baked it at 315F, and the plastic plug was unfazed. I like it!
Great upgrade(11/03/2010)
It took nearly five minutes to install the extension on an 870 Express not burdened with the internal ratchet system that would require drilling or grinding out the detents in the magazine tube. That included cleaning all the reddish-brown grease out of the extension.
The finish matches the matte finish of the shotgun fairly close. The tube threads down as tightly as the magazine cap it replaces without any slop. It seems to be more dent-proof than the factory tube. The provided clamp locked up well on the 20" tapered barrel and larger-diameter extension tube behind rifle sight ramp. The three-round tube extends out exactly to the muzzle. Choate also includes an orange, plastic follower that is an improvement over the short, flimsy factory part.
Minor points: The extension doesn't come with instructions, and the clamp doesn't ship with hardware that would allow one to do away with the attached sling swivel loop if not needed.
WORKS GREAT(30/10/2010)
Purchased this for my 870 youth 21" barrel, 20 gaand it works perfect. Removed the detents, installed barrel,orange shell follower into spring, extension onto the magazine, then the provided clamp and done! Increased capacity to 7 & 1. Cycles great without cutting spring, extends to about 1" less than the barrel.
How to get the edge on the bad guys(15/12/2011)
So simple to add on (even on the newer version) to the reliable 870 series of shotguns. Take that plug out, pop in the new spring and screw on the extension. You're now ready to surpise the intruder with an extra 3 shots just in case they decided to hold a family reunion at your home. Don't let them get away with it. You can load a few light loads of bird shot and follow up with good old buck shot if they don't get the hint. With the extension you don't have to worry about reloading so often. Some extra rounds in a butt stock holder and you're ready for swarms of bad guys or zoombies, whichever haunts your quiet neighborhood. Price is less than the Remington stock one and these extensions work just as well, if not better! I have them on all my 870s, both 12 Ga. and 20 Ga..
Pleasantly Surprised(14/03/2012)
Like another user, I bought this to fit my 870 Youth 20 gauge, FYI its built on a smaller frame than the 12 gauge 870. Wanted a home defense/truck gun. I was nervous because I have never bought a Choate product, but I was not dissapointed.. The extension is beefy beyond all reasonable expectations. The clamp that comes with it is utilitarian, it works but I may replace it in the future, it also has a sling attachment point but I don't have a sling on this, so its useless to me so far. The locking collar/nut on the tube matched the matte finish on my gun but the tube itself is nicely blued. Not a big deal to me. The mag spring seems kind of cheap I may also replce it, we will see. All in all I am pretty happy with it so far.
This is a great product.(07/03/2014)
Five minute installation on my 18.5", Rem 870, lightweight, 20-gauge. Perfect fit!
Help and contact
(0) 
Newsletter
Classical view
Mobile view