The JBU M4 SD Kit is the same kit we used to create Airsoft GI 7.5 Diplomat. This kit comes withe everything you need to change the look of the front end of your M4/M16. Included with this kit is, the RIS free float and upper receiver and D ring, the outer barrel and barrel extension, precision 6.03mm tight bore inner barrel, and a special D ring tool for a precise fit.
This is a nice package for anybody that wants to have a CQB look to it. With a g&p marine battery (shorty) stock and this ris system itís shorter than my G&G MP5 (just to give you an idea on how small it its). I put this on my ICS within ten minutes. The silencer that it comes with is long and left about an inch from the delta ring so you can feed wires through there in to a peq box. The tight bore that it comes with is accurate. It looks good on the gun has a mean look to it. Another word on the silencer it is really light lighter than any other silencer I have owned.
Easy to install
Small perfect for CQB environments
Tight bore is accurate
Silencer is light
Adds a mean look to it
Took a while for me to thread the wires through the ris system
2008-02-13 09:14:37 N. MILLER verified buyer
For: JBU M4 SD Kit
this kit looks great on any m4! mine installed in less than 20 minutes!! i have an Echo1 tactical m4, all the tools you need (an allen wrench and a special tightner for the new delta ring) is all in the package and are very high quality so you dont have to worry about them breaking in the middle of the job. with this and any kind of scope, your new m4 will be the best looking on the field. plus it has a unique look to it so it looks like a custom job. also its only about half a standard m4 barrel so it will work great for CQB
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