Shotgun Extension Fit Guide

If your shotgun is not listed, we do not make an extension that fits it.



Tube Lengths

MXT 12ga Tube Lengths
Measuring shotgun for tube length

Measurements based on the length of the extension tube, as shown in the table below, should be taken from the front of the factory magazine with the magazine cap removed. Any extension extending past the muzzle will experience fouling build-up and finish wear/damage; extensions may extend up to 18″ beyond the muzzle (any resulting wear or damage is not covered by warranty).

The extension tube cap will add approximately .200″ to the length of the extension tube.

All MXT tube kits are for 12 gauge shotguns only. MXT tubes have an outside diameter of 1.060″, and are machined from 6000-series aluminum with a matte black anodized finish.

EXTENSION CAPACITYOVERALL LENGTHNOTES
+12.66″Integral cap, no clamp groove
+25.00″
+37.52″
+3B8.35″Designed for flush fit on 18.5″ Benelli autos
+49.80″
+5B10.83″Designed for flush fit on 21″ Benelli autos
+511.60″
+614.00″
+7B15.75″Designed to fit closer to muzzle on 26″ Benelli autos
+716.50″
+8B18.35″Designed to fit closer to muzzle on 28″ Benelli autos
+819.09″
+921.50″
20ga Tube Lengths
Measuring shotgun for tube length

Measurements based on the length of the extension tube, as shown in the table below, should be taken from the front of the factory magazine with the magazine cap removed. Any extension extending past the muzzle will experience fouling build-up and finish wear/damage; extensions may extend up to 18″ beyond the muzzle (any resulting wear or damage is not covered by warranty).

The extension tube cap will add approximately .200″ to the length of the extension tube.

20ga extension tubes have an outside diameter of 1.003″, and are machined from 6000-series aluminum with a matte black anodized finish.

EXTENSION CAPACITYOVERALL LENGTHNOTES
+49.29″
+510.83″
+613.27″
+716.50″

Benelli

M1, M2, SBE 1/2/3
Benelli M2 Field

FACTORY CAPACITY: 3 rounds

MXT EXTENSION NUT: NUT-BN-12-00 (NUT-BN-20-00 – 20ga)

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
18.5″+3.750″ short of muzzle
18.5″+3BFlush fit to muzzle
21″+41″ short of muzzle
21″+5.750″ past muzzle
24″+6Flush fit to muzzle
26″+7.500″ past muzzle
28″+71.500″ short of muzzle
28″+81″ past muzzle

ACCESSORIES

Bolt handleBOH-BFB (see notes), BOH-BN, BOH-VM
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)

NOTES
The BOH-BFB bolt handles requires the current version of the Benelli bolt with the oblong anti-rotation cutout around the bolt handle hole. Older Benellis without this cutout are compatible only with BOH-BN and BOH-VM.

M2 Bolt with anti-rotation cutout
M4

The commercially-available M4 comes with a 5-round limited magazine from the factory. Nordic Components does not produce a compatible extension to bring the magazine to its 7-round full capacity. We recommend Dave’s Metal Works for the components required to bring the M4 to 7-round capacity (all 922(r) rules apply).

The M4 with a 7-round magazine will accept our BR extension tube nut (NUT-BR-12-00); this will allow any MXT extension kit to be used to add to the 7-round capacity.

Nova/Supernova

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-BR-12-00 (NUT-BR-20-00 – 20ga)

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
18″+2.500″ past muzzle
24″+4.750″ short of muzzle
24″+51.500″ past muzzle
26″+5.500 short of muzzle
28″+6.125″ short of muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampHeavy-walled/Mossberg (BCL-12-MB or BCT-12-MB)
FollowerNova/Vinci (FOL-VN-12-00)
Vinci/Super Vinci

FACTORY CAPACITY: 3 rounds

MXT EXTENSION NUT: NUT-VINCI-12-ASM

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
18″+31″ short of muzzle
24″+6Flush fit to muzzle
26″+7.500″ past muzzle
28″+8.625″ past muzzle
30″+81.125″ short of muzzle
30″+91.500″ past muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampHeavy-walled/Mossberg (BCL-12-MB or BCT-12-MB)
FollowerNova/Vinci (FOL-VN-12-00)

NOTES
Due to the angle of the magazine tube channel in the Vinci/Super Vinci forearm, a barrel clamp is required for use of any extension longer than a +4.

Cordoba, Ethos, Montefeltro, Sport II, Ultralight

Due to the design of the gas system and magazine cap interface, these shotguns are not capable of accepting a magazine extension.


Beretta

AL391 Xtrema/Xtrema2, A350 Outlander, A400 Xtreme/Xtreme Plus

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-BR-12-00

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
24″+4Flush fit to muzzle
26″+5Flush fit to muzzle
28″+6.500″ past muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)
1301 Comp/Tactical

FACTORY CAPACITY: 5 rounds (after removing spring retainer)

MXT EXTENSION NUT: NUT-BR-12-00

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
18.5″ (Tactical)+2 – 1301 Tactical PackageFlush fit to muzzle – see notes
21″+3.625″ past muzzle
24″+4.125″ short of muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12); Tactical uses BCL- or BCT-BR1301-TAC
FollowerStandard (FOL-SG-12-00)

NOTES
Nordic Components offers a dedicated package for the Beretta 1301 Tactical, featuring a custom-designed +2 extension tube for a flush fit to the shotgun’s muzzle.

If your 1301 Tactical has a factory extension, like the one below, you cannot utilize our system.

A300 Outlander, AL391 Urika/Teknys, A400 Xcel/Xplor

Due to the design of the gas system and magazine cap interface, these shotguns are not capable of accepting a magazine extension.


Breda

B12 Series, B3.5, 930I

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-BN-12-00

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
18.5″ (Tactical)+2Flush fit to muzzle
21″+3.625″ past muzzle
24″+4.125″ short of muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12); Tactical uses BCL- or BCT-BR1301-TAC
FollowerStandard (FOL-SG-12-00)

NOTES

Pre-2018 930i shotguns are not capable of accepting a magazine extension.


Browning

Auto-5 (Old Production)

FACTORY CAPACITY: 5 rounds

MXT EXTENSION NUT: NUT-BP-12-00 (see notes)

We do not have a measurements chart for this shotgun. Please use the information under TUBE LENGTHS to determine the desired tube length and capacity.

ACCESSORIES

Bolt handleN/A
Barrel clampSee Notes
FollowerN/A

NOTES
The magazine cap thread specifications changed many times over the course of the Auto-5’s production run. If NUT-BP-12-00 does not fit your Auto-5, it is possible NUT-RM-12-00 will fit. If neither of these nuts fit your shotgun, then we do not have a compatible extension nut.

The Browning Auto-5, like all long-recoil operation shotguns, is NOT COMPATIBLE with a barrel clamp. Installation of a barrel clamp on this type of shotgun may cause permanent damage to the firearm.

A5 (New Production)

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-NA5-12-00

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
26″+6Flush fit to muzzle
28″+7B.250″ short of muzzle
30″+8B.250″ past muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)
BPS

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-BP-12-00

We do not have a measurements chart for this shotgun. Please use the information under TUBE LENGTHS to determine the desired tube length and capacity.

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00) – See notes

NOTES
Early models of the BPS shotgun have a rolled crimp at the end of the magazine tube. For installation of any magazine extension or a Nordic follower, this crimp will need to be removed — please consult with a gunsmith before attempting installation of an extension or follower replacement.

Gold/Silver

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-SX-12-00 (NUT-BG-20-00 – 20ga)

We do not have a measurements chart for this shotgun. Please use the information under TUBE LENGTHS to determine the desired tube length and capacity.

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00) – See notes

NOTES
Due to shell stop tension conflicts, we do not recommend use of an extension larger than a +4 on the Browning Gold.

Extensions are compatible only with 12 gauge versions of the Browning Gold. We do not have any extensions compatible with the 10 gauge Gold.


CZ

612/712/912

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-BR-12-00

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
20″+3.625″ past muzzle
26″+51.350″ short of muzzle
26″+61.150″ past muzzle
28″+6.850″ short of muzzle
28″+71.625″ past muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00) – see notes

NOTES
Certain early 612/712 shotguns are not compatible with Nordic Components followers.


FN

SLP

FACTORY CAPACITY: 6 or 8 rounds (varies by model)

MXT EXTENSION NUT: NUT-SX-12-00

NOTES
Because all SLP models have a full-length magazine from the factory, any MXT extension will extend past the muzzle in entirety. We recommend extending no more than 18″ past the muzzle.

EXTENSION LENGTHS WITH SX NUT AND CAP
+13.125″
+25.6875″
+38.1875″
+410.4475″
+512.27″
+614.6675″
+717.1875″
+819.75″
+922.1875″

ACCESSORIES

Bolt handleBOH-SX
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)
FN Auto-5

FACTORY CAPACITY: 5 rounds

MXT EXTENSION NUT: NUT-BP-12-00 (see notes)

We do not have a measurements chart for this shotgun. Please use the information under TUBE LENGTHS to determine the desired tube length and capacity.

ACCESSORIES

Bolt handleN/A
Barrel clampSee Notes
FollowerN/A

NOTES
The magazine cap thread specifications changed many times over the course of the Auto-5’s production run. If NUT-BP-12-00 does not fit your Auto-5, it is possible NUT-RM-12-00 will fit. If neither of these nuts fit your shotgun, then we do not have a compatible extension nut.

The FN Auto-5, like all long-recoil operation shotguns, is NOT COMPATIBLE with a barrel clamp. Installation of a barrel clamp on this type of shotgun may cause permanent damage to the firearm.

P-12

FACTORY CAPACITY: 5 rounds

MXT EXTENSION NUT: NUT-WIN-120-00 (see notes)

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
18″+1Flush fit to muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)

Franchi

Affinity/Affinity 3.5/Intensity/612/912

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-ST-12-00

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
26″+6.500″ past muzzle
28″+61.500″ short of muzzle
28″+71″ past muzzle
30″+71″ short of muzzle
30″+81.500″ past muzzle

ACCESSORIES

Bolt handleBOH-BFBBOH-BNBOH-VM
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)

Mossberg

500/535 (all versions), Maverick 88

NOTES
Due to the design of the barrel lug and the magazine cap interface, the Mossberg 500/535 and Maverick 88 cannot accept a magazine extension.

590/590A1

FACTORY CAPACITY: 6 (18.5″ barrel) or 8 (20″ barrel) rounds

MXT EXTENSION NUT: NUT-MB-12-00

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
18.5″+11″ past muzzle
18.5″+22″ past muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampHeavy-walled (BCL-12-MB or BCT-12-MB)
FollowerStandard (FOL-SG-12-00)

NOTES
Because the 20″ 590/590A1 models have a full-length magazine from the factory, any MXT extension will extend past the muzzle in entirety. We recommend extending no more than 18″ past the muzzle.

EXTENSION LENGTHS WITH MB NUT AND CAP
+13.125″
+25.6875″
+38.1875″
+410.4475″
+512.27″
+614.6675″
+717.1875″
+819.75″
+922.1875″
835

FACTORY CAPACITY: 5 rounds

MXT EXTENSION NUT: NUT-MB-12-00

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
24″+31.25″ short of muzzle
24″+41″ past muzzle
26″+41″ short of muzzle
26″+5.750″ past muzzle
28″+51.25″ short of muzzle
28″+61.25″ past muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampHeavy-walled (BCL-12-MB or BCT-12-MB)
FollowerStandard (FOL-SG-12-00)

NOTES
Because the 20″ 590/590A1 models have a full-length magazine from the factory, any MXT extension will extend past the muzzle in entirety. We recommend extending no more than 18″ past the muzzle.

EXTENSION LENGTHS WITH MB NUT AND CAP
+13.125″
+25.6875″
+38.1875″
+410.4475″
+512.27″
+614.6675″
+717.1875″
+819.75″
+922.1875″
930/940 (versions other than JM Pro)

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-MB-12-00

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
18.5″+21″ short of muzzle
18.5″+31.500″ past muzzle
22″+4.200″ past muzzle
24″+5Flush fit to muzzle
26″+6.500″ past muzzle
28″+71.00″ past muzzle

ACCESSORIES

Bolt handleBOH-MB
Barrel clampStandard (BCL-12 or BCT-12) EXCEPT 930SPX – requires heavy-walled clamp (BCL-12-MB)
FollowerStandard (FOL-SG-12-00)

NOTES
The 930/940 shell stop can be very sensitive to magazine spring tension. We do not recommend using an HD spring in the 930.

930/940 JM Pro

FACTORY CAPACITY: The Mossberg 930/940 JM Pro Series shotguns come factory equipped with Nordic Components +4 (22″ barrel) or +5 (24″ barrel) magazine extensions. The capacity of the factory magazine without the extension is 4.

To expand the capacity of the JM Pro, the extension tube itself may be replaced with a different length, or an additional extension tube may be added with an MXT Coupler. The same extension nut and end cap may be reused, but a new spring will be required.

NOTE: Prior to 2016, Mossberg used our older EXT style extension tubes. These can be identified by the lack of a barrel clamp groove on the exterior of the extension tube. If your JM Pro has the older EXT tube, the existing extension nut can be reused, but a new end cap will be required if replacing the extension tube with a new MXT model. If using the MXT Coupler, the new MXT tube will have to connect to the extension nut; the existing EXT tube can be used attached to the coupler with the existing end cap.

The 930/940 shell stop can be very sensitive to magazine spring tension. We do not recommend using an HD spring in the 930.


Remington

870 (standard magazine)

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-MB-12-0NUT-RM-12-00 (NUT-RM-20-00 – 20ga)

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
14″MXT Plug Cap (adds 1)Flush fit to muzzle
14″+11.500″ past muzzle
18.5″+21″ short of muzzle
18.5″+31.500″ past muzzle
20″+3Flush fit to muzzle
22″+4.500″ past muzzle
24″+5Flush fit to muzzle
26″+6.500″ past muzzle
28″+61.500″ short of muzzle
28″+71″ past muzzle
30″+71″ short of muzzle
30″+81.875″ past muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)

870 (6-round magazine)

FACTORY CAPACITY: 6 rounds

MXT EXTENSION NUT: NUT-RM-12-00

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
18.5″+11.250″ past muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)
1100/11-87

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-RM-12-00

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
14″MXT Plug Cap (adds 1)Flush fit to muzzle
14″+1
24″+5.250″ past muzzle
26″+6.750″ past muzzle
28″+61.250″ short of muzzle
28″+71.250″ past muzzle
30″+7.750″ short of muzzle
30″+81.250″ past muzzle

ACCESSORIES

Bolt handleBOH-RM
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)

NOTES
The 930/940 shell stop can be very sensitive to magazine spring tension. We do not recommend using an HD spring in the 930.

Versa Max and V3 (all models except Tactical/Competition Tactical)

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-RM-12-00

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
22″+4Flush fit to muzzle
24″+5Flush fit to muzzle
26″+6.250″ past muzzle
28″+7.750″ past muzzle

ACCESSORIES

Bolt handleBOH-MB
Barrel clampStandard (BCL-12 or BCT-12) EXCEPT 930SPX – requires heavy-walled clamp (BCL-12-MB)
FollowerStandard (FOL-SG-12-00)

NOTES
The 930/940 shell stop can be very sensitive to magazine spring tension. We do not recommend using an HD spring in the 930.

Versa Max Tactical

The Versa Max Tactical comes factory-equipped with a Nordic Components extension assembly. Capacity may be added by swapping out to a longer extension tube or adding an additional tube with the use of the MXT Coupler.

Versa Max Competition Tactical

The 2-round extension on the Competition Tactical can be replaced with our Mossberg extension nut (NUT-MB-12-00) and an MXT extension of any desired length.

Barrel clamps are not compatible with the factory magazine, due to the increased diameter of the carbon fiber sleeve.

Model 11

FACTORY CAPACITY: 5 rounds

MXT EXTENSION NUT: NUT-RM-12-00 (see notes)

We do not have a measurements chart for this shotgun. Please use the information under TUBE LENGTHS to determine the desired tube length and capacity.

ACCESSORIES

Bolt handleN/A
Barrel clampSee Notes
FollowerN/A

NOTES
The magazine cap thread specifications changed many times over the course of the Model 11’s production run. If NUT-RM-12-00 does not fit your shotgun, it is possible NUT-BP-12-00 will fit. If neither of these nuts fit your shotgun, then we do not have a compatible extension nut.

The Model 11, like all long-recoil operation shotguns, is NOT COMPATIBLE with a barrel clamp. Installation of a barrel clamp on this type of shotgun may cause permanent damage to the firearm.


Retay

Masai Mara

Due to the design of the gas system and magazine cap interface, these shotguns are not capable of accepting a magazine extension.


Stevens

320

FACTORY CAPACITY: 5 rounds

MXT EXTENSION NUT: NUT-WIN-120

We do not have measurements for this shotgun. Please use the information under TUBE LENGTHS to determine the desired tube length and capacity.

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)

Stoeger

M2000

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-ST-12-00

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
24″+5Fluch fit to muzzle
26″+6.500″ past muzzle
28″+71.00″ past muzzle

ACCESSORIES

Bolt handleBOH-BFB, BOH-BN, BOH-VM
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)

NOTES
Early-model M2000 shotguns utilized a different magazine cap thread specification than later-production guns; we do not manufacture an extension nut to fit the earlier guns, and unfortunately do not have any information regarding a date or serial number at which this change took place. Compatibility with NUT-ST-12-00 can be determined by test-fitting the M2000 magazine cap to a known later-production M2000, or a Franchi Affinity/Intensity.

M3000/M3K

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-M3000-12-00

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
24″+5.500″ past muzzle
26″+6.500″ past muzzle
28″+61.500″ short of muzzle
28″+71″ past muzzle
30″+71″ short of muzzle
30″+81.500″ past muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)

P3000/P3500

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-M3000-12-00

We do not have a measurements chart for this shotgun. Please use the information under TUBE LENGTHS to determine the desired tube length and capacity.

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)

NOTES
The 930/940 shell stop can be very sensitive to magazine spring tension. We do not recommend using an HD spring in the 930.

M3500

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-M3000-12-00

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
24″+4.500″ past muzzle
26″+5.250″ past muzzle
28″+6.250″ past muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)

M3020

We do not currently manufacture an extension nut compatible with the Stoeger 3020.


Tristar

Raptor

FACTORY CAPACITY: 5 rounds

MXT EXTENSION NUT:

We do not have a measurements chart for this shotgun. Please use the information under TUBE LENGTHS to determine the desired tube length and capacity.

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)

Weatherby

SA-08

FACTORY CAPACITY: 5 rounds

MXT EXTENSION NUT: NUT-BR-12-00 (NUT-BR-20-00 – 20ga)

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
24″+4.500″ past muzzle
26″+41.500″ short of muzzle
26″+5.500″ past muzzle
28″+51.500″ short of muzzle
28″+6.750″ past muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)

18i

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-BN-12-00

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
28″+51.500″ short of muzzle
28″+6.750″ past muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)


Winchester

120/1200/1300

FACTORY CAPACITY: 5 rounds

MXT EXTENSION NUT: NUT-WIN-120

We do not have a measurements chart for this shotgun. Please use the information under TUBE LENGTHS to determine the desired tube length and capacity.

BARREL LENGTHRECOMMENDED EXTENSIONNOTES

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)

SX2/SX3/SX4

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-SX-12-00 (NUT-BG-20-00 – 20ga)

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
22″+4.250″ past muzzle
24″+5Flush fit to muzzle
26″+52″ short of muzzle
26″+6.500″ past muzzle
28″+61.500″ short of muzzle
28″+71″ past muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)

SXP (all models)

FACTORY CAPACITY: 4 rounds

MXT EXTENSION NUT: NUT-WIN-SXP

BARREL LENGTHRECOMMENDED EXTENSIONNOTES
24″+4.500″ past muzzle
26″+5.250″ past muzzle
28″+6.250″ past muzzle

ACCESSORIES

Bolt handleN/A
Barrel clampStandard (BCL-12 or BCT-12)
FollowerStandard (FOL-SG-12-00)