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CQB Spotlight Field Spotlight Sniper Spotlight
Echo 1 M4 Outer Barrel Extension
[04133 / ECHO M4 OTB ADAP]
$24.00 $18.72
Displaying 1 to 3 (of 3 reviews) Result Pages:  1 
by J. BURKETT verified buyer Date Added: Wednesday 10 February, 2010
verified buyer
For: Echo 1 M4 Outer Barrel Extension
Product Information:
I'd like to add to my original review due to a problem I experienced when the item finally arrived. I got the item from AirsoftGI last year and it was slightly rusted (inside and outside). Functionally it works fine but it looked less than quality. I kept using it for a while now and despite being kept in a dry case, the rust has gotten worse and worse.

Protection for my longer inner barrel.

Came rusted and oxidation has only gotten worse.
by L. BURKE verified buyer Date Added: Tuesday 07 April, 2009
verified buyer
For: Echo 1 M4 Outer Barrel Extension
Product Information:
I purchased this extension for my JG 416 PEQ to accomodate a systema TBB. It fit really well and it looks great on my gun, a big cosmetic upgrade. On the side it is labeled: "C MP 5.56 nato 1/7". It is about four inches long and made out of steal or pot metal.

You can attach a flash hider or silencer on the end.
Counter clockwise
Made out of top notch metal

Some weight (not a con)
by J. BURKETT verified buyer Date Added: Tuesday 10 February, 2009
verified buyer
For: Echo 1 M4 Outer Barrel Extension
Product Information:
This is an extension for the external barrel of an M4 type Rifle. It extends the barrel about 5 inches which can allow you to turn a CQB airsoft gun into an M4 length airsoft gun. I used this with a JG Brand HK 416 to allow me to put a longer barrel into the gun. Basically all you need to do is remove the flash hider and then this extension screws right on. You can then screw the flash hider back on at the end of the extension. With this barrel extension I was able to go from a 275mm inner barrel to a 363mm TIGHT BORE barrel with room to spare. You probably want to use loctite or something to lock the extension into place, but it does not come with the extension. This upgrade, combined with the 363mm Tight Bore has increased the accuracy of the gun by a lot. This extension was designed to work with Echo 1 and JG M4 style guns, but would probably work with any brand as long as it has the 14mm counter clockwise thread.

-Can increase the length of your AEG if you want a longer inner barrel
-Metal, nice weight but not too heavy
-Easy to install
-Very nice finish, dosen't look like it will chip
-Can give you the ability to switch between a CQB version and a full length version using the same gun

-It's not really needed since the barrel fits pretty tight, but it does not come with any locking adhesive which would be nice to make sure the extension would hold on tight
-There was some red dust in on the inside of the threads on the extension. I do not think it was rust because it cleaned off easily with a paper towel and some silicone spray
Displaying 1 to 3 (of 3 reviews) Result Pages:  1 
Back Write Review

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