Part of my review that I did on my GBTech kit.
Quote:
what's in this conversion kit?
-#38 type SPR PEQ-2-MOD long rail
-Gen III type front guard
-OPS flash hider
-OPS suppressor
-Reinforced outter barrel
-M84 big latch
-flip up front sight
Kit comes assemble in the package.I had to disassemble everything to install on my Systema M16A3 metal body. Nothing too difficult but you have to be careful to aligne the barrel lock so that the front guard, which is connected to the lock with two pins, also lines up with the top rail of the receiver body.
After installing the front guard,barrel and the rest of the parts on the barrel, I connected the #38 rail to the body and front guard. Without the rail,the free floating front guard is strong enough for a solid feel. With the #38 rail installed, I have to say this is the most solid rail system I have.
The quality and finish of the kit is extremely high.The best I have seen is all I can say. There are steel helical inserts to better resist stripping the threads and the fit of the parts are perfect.
Instructions came in Chinese with B&W pictures.
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If he needs more shims, he can get a thin brass sheet at a hobby shop and cut extra rings with it to help aligne the foregrip.
I think you might also need to increase the hole where the inner barrel goes through on the flash hider or trim down the diameter of a Prometheus inner barrel for it to fit.