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CQB Spotlight Field Spotlight Sniper Spotlight
JBU M120 Upgrade Kit for M16 AEG
[02970 / SDJA42]
Displaying 1 to 4 (of 4 reviews) Result Pages:  1 
by J. WENTLING verified buyer Date Added: Tuesday 03 August, 2010
verified buyer
For: JBU M120 Upgrade Kit for M16 AEG
Product Information:
i bought this to overhaul my jg m16 a4, and increase the air seal. for these purposes it worked, but created additional problems in my gun. every once in a while, my piston will get jammed in the rear position, blowing my fuse. not only is this annoying, having to open up the gb, reset the piston, and replace the fuse, but it made a stripping noise, even though nothing was stripped when i bypassed the fuse, and i now have two aegs in need of fuses (i blew both of them with this ftk) i am currently trying to find out what causes this problem, but i know a the ins and outs of the v2 gb, and i am sure its not an installation error.

amazing air seal
gets the job done
full metal everything, great value, great quality.
even though the parts are heavy, the rof doesnt decrease nearly as much as i expected.
comes pre aoe fixed

parts dont seem to be compatible with my gb
tolerances may be off
does not work well in my application (piston issues)
need to further investigate what went wrong
by V. BALDYGA verified buyer Date Added: Sunday 25 July, 2010
verified buyer
For: JBU M120 Upgrade Kit for M16 AEG
Product Information:
Got this kit about 3 days ago and put it in today. At first, insert there was no air pressure. So tip on putting it in. Line it up and put it in as delicately as possibly, make sure everything it air tight to. Other than that it work amazingly! I love it, I saw the difference right before my eyes! Your be so glad you got it!

Great quality
Low price
Nice sound to it
Cool looking
Pretty easy installation

O ring loose but no biggy.
by R. BOUFFIOUX verified buyer Date Added: Monday 29 September, 2008
verified buyer
For: JBU M120 Upgrade Kit for M16 AEG
Product Information:
This is currently installed in my JG M16-A4 -_ SPR conversion. Coupled with a 550mm JBU tightbore, Systema shims, Area 1000 bushings, and a standard 8.4v battery, this sucker puts .20g and .25g BBs through the bottom of a coke can every time... in semi-automatic, anyways.

Marked improvement in power.
Simple installation (no carving out the piston head etc).
Good binding-prevention system on the spring guide etc.
Not a terrible cost for everything included.

I can't knock it for hanging or firing eratically in full-auto, since the rifle is used as a DMR rather than an assault rifle. This issue could always be chalked up to the battery (which is slightly worn), the selector plate or a shim being off, anyways.

Long-term durability has yet to be determined.
by D. STRACENER verified buyer Date Added: Thursday 05 June, 2008
verified buyer
For: JBU M120 Upgrade Kit for M16 AEG
I bought this kit for my SPR with a 509 tightbore.

Everything seems to work just fine.

All the parts have good finish and fit.

I stayed with the stock spring that was getting 380 but used the rest of the kit. My fps is now 393-395.

The O ring seems loose but understand they are made that way, and it does work.
Displaying 1 to 4 (of 4 reviews) Result Pages:  1 
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