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Shotgun Magazine Extensions

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Shotgun Magazine Extensions for Mossberg, Remington, Winchester, 7,8,9,10, shell extensions, 12 ga, and 20 ga, spare springs, for shooting, home defense, self defense, law enforcement, military, and more!!! 

Choate stocks are available for Ithaca, Remington, Mossberg, Winchester, H&R, Thompson Center, Savage, SKS, AK-47, Ruger Mini-14, Ruger Mini-30, M1 Carbine, Mauser, H&K, and Ruger 10/22. These are high quality, drop-in synthetic stocks that are easy to mount and deliver years of consistent accuracy.

 

We offer a Magazine Extension Kit for shotgun owners. Our kit includes everything that you need to safely increase your firepower.
Kit includes (1) Magazine Extension (7,8, 9 and 10 shot), (1) Base Clamp, (except Fabarms FP6 and Mossberg 835) and (1) High Visibility Shell Follower.
Increase your fire power anywhere from 2 to 7 shells with our shotgun magazine extensions kits. These extensions are great for law enforcement officers and competition shooters in reducing the time to reload. They are also a must for home protection.

These kits are constructed of solid polished or matte blued steel and come complete with spring, base clamp,(except Mossberg 835, no clamp supplied) & follower. The new model Remington 870/1100/1187 shotguns have dimples that will have to be drilled out with 3/16 inch holes before the spring will extend up into the magazine extension. The older model Remington 870/1100/1187 will readily accept extensions without any alterations.

 

Shotgun Tube Extensions

Increase your fire power anywhere from 2 to 5 shells with our shotgun magazine extension kits. These extensions are great for law enforcement officers and competition shooters in reducing the time to reload. They are also a must for home protection.

These kits are constructed of solid blued steel and come with spring, base clamp (except Fabarms FP6 and Mossberg 835) & follower.

Kit includes : 1 Magazine Extension - (7,8, 9 or 10 shot), 1 Base Clamp (except Fabarms FP6 and Mossberg 835), 1 High Visibility Shell Follower.

Special Fitting Instructions:

The new model Remington 870/1100/1187 shotguns have dimples that will have to be drilled out with 3/16 drill bit before the spring will extend up into the magazine extension. The older model Remington 870/1100/1187 will readily accept our extensions without any alterations. No extensions for Mossberg 500/600/590.

Will Fit: Remington 870/1100/1187/Versa Max, Mossberg 5500/9200/835/935 Winchester 1200, 1300, Ranger 120 & Defender, Fabarm FP6,   (9200 must have special shell follower)

7 Shot Model fits 18" barrel or longer.

8 Shot Model fits 20" barrel or longer.

9 Shot Model fits 24" barrel or longer.

10 Shot Model fits 26" barrel or longer.

(Sling Swivel base clamps included with most Magazine Extension Kits to add needed support. Remington Lightweight Extensions require our lightweight base clamps.) Fabarm FP6 and Mossberg 835 kits don't include base clamps. There is not enough room between the barrel and the magazine for a clamp.

Extensions are available in polished blue or matte blue finishes.

Order NOW!

Note required minimum barrel lengths at left.

 

Most units come with a base clamp that allows sling attachment. Note that the Mossberg 835 and the Fabarm FP6 does not come with a base clamp.

Item Number Description Price  
15-04-02 Choate Fabarm FP6 7 Shot Extension, 12 ga., polished blue, no base clamp. $52.00
15-04-03 Choate Fabarm FP6 8 Shot Extension, 12 ga., polished blue , no base clamp. $52.00

Mouseover for more details - Order NOW! 02-04-10

Adds 1 round to your Mossberg Cruiser shotgun with breacher barrel. Comes with spring, shell follower and sling swivel barrel clamp

Adds 1 round to your Mossberg Cruiser shotgun with breacher barrel. Comes with spring, shell follower and sling swivel barrel clamp. The extension is 3 and 1/8 inches long.

Only fits Mossberg Cruiser with Breacher Barrel

 

02-04-10 Choate Mossberg 500 Cruiser Breacher Barrel Magazine Extension, adds one round to existing factory magazine. Matte finish  Does not fit other 500 shotguns $52.00
02-04-02 Choate Mossberg 5500/935/9200 7 Shot Extension, 12 ga., polished blue $52.00
02-04-07 Choate Mossberg 5500/935/9200 7 Shot Extension, 12 ga., matte blue $52.00
02-04-03 Choate Mossberg 5500/935/9200 8 Shot Extension, 12 ga., polished blue $52.00
02-04-08 Choate Mossberg 5500/935/9200 8 Shot Extension, 12 ga., matte blue $52.00
02-04-04 Choate Mossberg 5500/935 9 Shot Extension, 12 ga., polished blue $54.00
02-04-05 Choate Mossberg 5500/935/9200 10 Shot Extension, 12 ga., polished blue $59.00
02-04-32 Choate Mossberg 930 7 Shot Extension, 12 ga., matte blue $52.00
02-04-33 Choate Mossberg 930 8 Shot Extension, 12 ga., matte blue $52.00
02-04-34 Choate Mossberg 930 9 Shot Extension, 12 ga., matte blue $54.00
02-04-35 Choate Mossberg 930 10 Shot Extension, 12 ga., matte blue $59.00
01-04-02 Choate Remington 870/1100/1187/Versa Max  7 Shot Extension, 12 ga., polished blue $52.00
01-04-03 Choate Remington 870/1100/1187/Versa Max  8 Shot Extension, 12 ga., polished blue $52.00
01-04-04 Choate Remington 870/1100/1187/Versa Max  9 Shot Extension, 12 ga., polished blue $54.00
01-04-05 Choate Remington 870/1100/1187/Versa Max  10 Shot Extension, 12 ga., polished blue $59.00
03-04-02  Choate Winchester 1200/1300/120/Defender 7 Shot Extension, 12 ga., polished blue $52.00
03-04-03 Choate Winchester 1200/1300/120/Defender 8 Shot Extension, 12 ga., polished blue $52.00
03-04-04 Choate Winchester 1200/1300/120/Defender 9 Shot Extension, 12 ga., polished blue $54.00
03-04-05 Choate Winchester 1200/1300/120/Defender 10 Shot Extension, 12 ga., polished blue $59.00
01-04-32 Choate Remington 870/1100 Lightweight 7 Shot Extension, 20 ga., polished blue $52.00
01-04-33 Choate Remington 870 /1100 Lightweight 8 Shot Extension, 20 ga., polished blue $52.00
01-04-42 Choate Remington 870/1100 Lightweight 7 Shot Extension, 20 ga., matte $52.00
01-04-43 Choate Remington 870 /1100 Lightweight 8 Shot Extension, 20 ga., matte. $52.00
01-04-34 Choate Remington 870/1100 Lightweight 9 Shot Extension, 20 ga., polished blue $52.00
01-04-35 Choate Remington 870/1100 Lightweight 10 Shot Extension, 20 ga.., polished blue $59.00
01-04-06 Choate Remington 870/100/1187 7 Shot Matte Blue Extension, 12 ga. $52.00
01-04-07 Choate Remington 870/1100/1187 8 Shot , Matte Blue, 12 ga. $52.00
01-04-08 Choate Remington 870/1100/1187 9 Shot Matte Blue, 12 ga. $54.00
01-04-09 Choate Remington 870/1100/1187 10 Shot matte Blue Extension, 12 ga. $54.00
02-04-22 Choate Mossberg 835  7 Shot Matte Blue Extension, 12 ga., no base clamp. $52.00
02-04-12 Choate Mossberg 835  7 Shot Blue Extension, 12 ga., no base clamp. $52.00
02-04-23 Choate Mossberg 835 8 Shot Matte Blue Extension, 12 ga., no base clamp. $52.00
02-04-13 Choate Mossberg 835 8 Shot Blue Extension, 12 ga., no base clamp. $52.00
02-04-12 Choate Mossberg 835 7 Shot Extension, matte blue, 12 ga. ,no base clamp. $52.00
02-04-13 Choate Mossberg 835 8 Shot Extension, 12 ga., polished blue, no base clamp. $52.00
02-04-14 Choate Mossberg 835 9 Shot Matte Blue Extension, 12 ga., no base clamp. $52.00
02-04-24 Choate Mossberg 835 9 Shot Blue Extension, 12 ga., no base clamp. $52.00
02-04-25 Choate Mossberg 835 10 Shot Matte Blue Extension, 12 ga., no base clamp. $52.00
02-04-15 Choate Mossberg 835 10 Shot Blue Extension, 12 ga., no base clamp. $52.00
Spare Springs
60-09-11 Choate 7 and 8 Shot Extra Spring $14.00
60-09-14 Choate 7 and 8 Shot Extra Spring 20 GA Light Weight Spring $14.00
60-09-12 Choate 9 and 10 Shot Extra Spring $14.00

Benelli Magazine Extensions
21-04-02 Benelli + 2 shot extension Blued for the Super black eagle (SBE), SBE II, M1 and M2, 12 gauge, , polished blue $47.00
21-04-04 Benelli +4 Magazine extension for the Super black eagle (SBE), SBE II, M1 and M2, 12 gauge, , polished blue $50.00
21-04-12 Benelli Magazine extension + 2 mat blued for the Super black eagle (SBE), SBE II, M1 and M2, 12 gauge, matte blue finish $47.00
21-04-14 Benelli Magazine extension +4 for the Super black eagle (SBE), SBE II, M1 and M2, 12 gauge, , matte blue $50.00
21-04-22 Benelli 20 gauge M1 magazine extension +2 matte blued $47.00
General information on extensions.
7 Shot- +2shot Length- 6 in. fits 18 in. barrel Some Mossberg shotguns use a +1 shot extension for the 18 inch barrel. 8 Shot- +3 Length- 8 in. fits 20 in barrel 9 Shot- +4 Length- 10 in. fits 22 in. barrel 10 Shot- +5 Length- 14 in. fits 26 in. barrel The barrel on the 835 Mossberg pump is closer to the magazine cap so you will have to use one size shorter extension than the chart shows. Magazine capacity is measured with 2 3/4 inch shells. You will loose one round of capacity with 3 inch shells. The new model Remington shotguns have dimples that hold the spring retainer in. If you have these you will need a 3/16 inch (5mm) drill and drill each dimple out for the outside of the tube. You take a round file and remove all burs for the inside of the tube. 1. You will need eye protection! Part will be under spring pressure. Remove the magazine cap from the end of the magazine tube under barrel by unscrewing it. 2. If your shotgun has the metal spring retainer you will have to gently pull it out. Caution the spring is under pressure, it will jump out of the tube if you are not careful. If you have the new type spring retainer remove the dimples. 3. Remove the spring and shell follower. You do not have to use the orange follower that comes with the extension, you can use the original follower if you wish. 4. Install a follower and the long spring into the tube on the shotgun and then slide the extension over the other end of the spring and feed the spring into both tubes as you lower the extension on to the end of the magazine tube. The screw the extension on to the end of the magazine tube while holding the tube straight with the barrel.
 
How do I install my extension?
Note: The new model Remington shotguns have dimples that hold the spring retainer in. If you have these you will need a 3/16 inch (5mm) drill and drill each dimple out for the outside of the tube. You take a round file and remove all burs for the inside of the tube. 1. You will need eye protection! Part will be under spring pressure. Remove the magazine cap from the end of the magazine tube under barrel by unscrewing it. 2. If your shotgun has the metal spring retainer you will have to gently pull it out. Caution the spring is under pressure, it will jump out of the tube if you are not careful. If you have the new type spring retainer remove the dimples. 3. Remove the original spring and shell follower. You do not have to use the orange follower that comes with the extension, you can use the original follower if you wish. 4. Install a follower and the long spring into the tube on the shotgun and then slide the extension over the other end of the spring and feed the spring into both tubes as you lower the extension on to the end of the magazine tube. The screw the extension on to the end of the magazine tube while holding the tube straight with the barrel.
 
What is the longest extension I can use on my shotgun?
Shotgun Magazine Extensions 7 Shot- Length- 6 in. fits 18 in. barrel On some Mossberg 18 inch barrel you will have to use a 6 shot extension the will add one round so the extension will not stick past the end of the barrel. 8 Shot- Length- 8 in. fits 20 in barrel 9 Shot- Length- 10 in. fits 22 in. barrel 10 Shot- Length- 14 in. fits 26 in. barrel Magazine capacity is measured with 2 3/4 inch shells. You will loose one round of capacity with 3 inch shells. The barrel on the 835 Mossberg pump is closer to the magazine cap so you will have to use one size shorter extension than the chart shows.

 

 

 

 

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 Online orders are restricted to the USA only! We currently do NOT accept foreign credit cards or ship to foreign countries. If ordering from Hawaii, Alaska, Puerto Rico,  and Guam, additional shipping charges will be added to your order. No charge for credit card purchases. We ship to APO addresses. We do accept Purchase Orders from agencies and municipalities.  We only accept Visa and MasterCard.

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