+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Choate Tool Benelli M-4 +2 Extension Matte CMT-21-04-52 Finish: Matte (Parkerized), Magazine Capacity: 2 Round, $6.00 Off w/ Free S&H

Choate Tool Benelli M-4 +2 Extension Matte,12 Gauge, CMT-21-04-52
Choate Tool Benelli M-4 +2 Extension Matte,12 Gauge, CMT-21-04-52
Choate Tool Benelli M-4 +2 Extension Matte,12 Gauge, CMT-21-04-52
1 of 2 images
Choate Tool Benelli M-4 +2 Extension Matte,12 Gauge, CMT-21-04-52
Choate Tool Benelli M-4 +2 Extension Matte,12 Gauge, CMT-21-04-52
2 of 2 images
Choate Tool Benelli M-4 +2 Extension Matte,12 Gauge, CMT-21-04-52

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
Questions & Answers
Will this fit the AKSA S4? From everything I have read the parts should be interchangeable, I just wanted to make sure before I buy it. Expert Answer

The Choate Tool Benelli M-4 +2 Extension might work with the AKSA S4 since it is an M4 clone. However, since the manufacturer does not state any other gun besides the M4 as being compatible then fitment cannot be guaranteed.

by Hunter, Gear Expert, September 15, 2022
See 1 More Answer
Will this fit the SDS S4? Expert Answer

No, the Choate Tool Benelli M-4 +2 Extension is designed to be compatible with the Benelli M4 only.

by Ethan, Gear Expert, August 18, 2022
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review Included spring was too long by Zhao, king of the rock, Verified Owner, June 3, 2020
The included spring for this product for me was too long and I could only fit 6 shells in the tube. I then went back and put the 5 round spring back in the tube and it works as it should and I can fit 7 now. The extension is great, the included sprin...
Read More...
7/7 found this helpful
Most Recent Reviews Good option by ArmySgt, Verified Owner, April 18, 2025
Works as intended and easy to install. Be aware the larger portion of the extension will not allow the barrel to slide off, will have to remove the extension to field strip. Otherwise happy with it.
Most Recent Reviews MAC 1014 Turkanelli by Ish, Verified Owner, January 5, 2025
Got this for the MAC 1014 I picked up recently. Fit just fine upon installation and feeds rounds just fine with the new spring. My only complaint was a grey model showed up and it’s pictured black, it’s grown on me a bit and I’m keeping it as is (des...
Read More...
Most Recent Reviews Easy to install by Popo, Verified Owner, November 23, 2024
Makes your neutered M4 an M4. Easy install. Didn’t need the spring. Wish it came with a new magazine tube end cap.
Most Recent Reviews For Panzer Arms M4 by KCDALLAS, Verified Owner, March 26, 2024
Great price and fast delivery. Can't wait to install it. Transformation complete.
Read All 5 Reviews
Finish: Matte (Parkerized) Magazine Capacity: 2 RoundGun Make: Benelli Gun Model: Benelli M4 Condition: New

Code: OP3-MZX-CHTL48-CMT-21-04-52-2RD

MPN: CMT-21-04-52

UPC: 681920837183

List: $79.99Save $6.00
$73.99

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Choate Tool Benelli M-4 +2 Extension Matte

This extension will fit the Benelli M4 12 ga Increase your fire power by 2 shells with our shotgun magazine extension kits. These kits are constructed of solid steel and come with long spring. Sandblasted Matte blued finish. Use your factory follower, does not come with follower.image

Specifications for Choate Tool Benelli M-4 +2 Extension Matte:

Manufacturer: Choate Tool
Finish: Matte (Parkerized)
Magazine Capacity: 2 Round
Gun Make: Benelli
Gun Model: Benelli M4
Caliber: 12 Gauge
Condition: New
Country of Origin: USA

Features of Choate Tool Benelli M-4 +2 Extension Matte

  • Benelli M-4 +2 Ext Matte

Package Contents:

  • Choate Tool Benelli M-4 +2 Extension Matte

What firearm models does the manufacturer say Choate Tool Benelli M-4 +2 Extension Matte is compatible with?

The manufacturer says that Choate Tool Benelli M-4 +2 Extension Matte is compatible with Benelli M4

Choate Tool Benelli M-4 +2 Extension Matte Orderable Models

List of Orderable Models

Choate Tool Benelli M-4 +2 Extension Matte,12 Gauge, CMT-21-04-52 , MPN: CMT-21-04-52 , UPC: 681920837183 , Code: OP3-MZX-CHTL48-CMT-21-04-52-2RD

Choate Tool Benelli M-4 +2 Extension Matte Unavailable & Discontinued Models

List of Unorderable Models

USED Choate Tool Benelli M-4 +2 Extension Matte,12 Gauge, CMT-21-04-52, EDEMO2, Used, Condition Like New , MPN: CMT-21-04-52-EDEMO2 , Code: OP3-MZX-CHTL48-CMT-21-04-52-2RD-EDEMO2
Compare (0)
1 item has been added
Add at least two items to compare