If he has the new barrel installed correctly, and the factory set fsb and barrel are out of alignment he would simply need to send the product back to JSE for repair or replacement... or the shop who did the install could resolve the issue with a slight tuning. I have installed quite a few...
Have you considered returning the item to the individual you got it from? The repair for this problem seems manageable if one had the correct tools and know how. Also, you have the option of removing the front sight all together and adding a scope and base.... Hope this is helpful, good luck!
A few suggestions...
http://www.jsesurplus.com/ar15m416inchbarrelpreban-1-1.aspx
http://www.jsesurplus.com/ar15carbinecarbuffer-1.aspx
Total: 182.12 shipped
Benefit: New barrel and fsb, heavy buffer to help with brass deformation and recoil
Why: With these parts installed by a competent...
You don't happen to know where one could find this info do you? Sorry if i am hijacking the thread, I just think this could be important info for everyone to know.
The Birchwood Casey kit is excellent for a beginner as it is easy to get a smooth finish if you follow the directions. As stated, there are better products on the market that can provide a nicer finish, however if this is your first time blueing I suggest the BC kit. Ill emphasize prep work and...
for a synthetic stock i use nail polish remover and when all the krud and paint is gone i follow with a non menthol shaving cream to rehydrate the plastic... works wonders on old vietnam era m16s.
I got started with pawn shop .22s they can be had for cheap and if numerich doesnt have a diagram and replacement parts, ebay or gunbroker usually does. After all is said and done you have a good gun that shoots cheap ammo and will always be worth something. +1 on good tools and a clean solid...
I have had great experience with acriglass. It stipples well enough and you can get it pretty close to the same frame color, the plastic weld idea is also a viable option if you are comfortable doing the work. good luck!