Contact Us (626) 286-0360 Walk-In Superstore Daily Deal
Extended Phone Support Hours 7am-7pm PST 11/27 - 12/1
Browse by Type or Category
BLACK FRIDAY! SAVE 25% with coupon code: BLACK2017 (Exclusions apply, see details)

Matrix M4 CQB-R Convertible Barrel Adapter / Extension Set (14mm-)

ID: 27518 (BRL-3EXT-SET)
4.6 stars, based on 16 reviews
Matrix M4 CQB-R Convertible Barrel Adapter / Extension Set (14mm-)
Hover or touch above to zoom


- Instantly increase outer barrel length of any AEG with 14mm negative thread.
- Convert your CQB-R to a M4 length barrel. (Still allowing your flash hider / mock silencer)
- Convert your M4 to use free float M16 type R.I.S.
- Convert your VFC / BOYI (Echo1) Scar to Longer version.
- Convert Any AEG barrel with 14mm negative thread to longer outer barrel. (For specific attachments such as over barrel silencers.)

- High Grade Aircraft Grade Steel Construction.
- Precision 14mm negative counter-clockwise thread.
- Each extension comes with inner 14mm thread and outer 14mm thread.

Long : 110mm (including thread)
Medium: 55mm (including thread)
Short: 27.5mm (including thread)

16 Customer Reviews

(Write a review)

by Rick S. on 09/14/2017
"Got mine the match my ICS Komodo barrel looks like it was made for it
by OLIVER Q. on 01/14/2015
"Great threads. Screw together flush. Great buy
by Jake D. on 04/01/2010
"They do what they're supposed to - extend the outer barrel. Since they all have threads on the end, you can and are recommended to attach another piece on the end, like a custom flashhider.

The only oddness was when I first took them out of the little baggy they came in. They were attached to each other and covered in grease... Other than that, no problem so far.

Questions, Answers and Comments

Discuss about Matrix M4 CQB-R Convertible Barrel Adapter / Extension Set (14mm-) with your friends and fellow shoppers!

Comment or answer questions for a chance to win awesome prizes. Details can be found on the Facebook page. Remember to check "Also post on Facebook" to qualify for the giveaways!

Have an urgent question about this item? We monitor these comments daily, but it may be faster to email us directly or call us at (626) 286-0360. Our resident experts are standing by to answer your questions!