The FN 15 rifle series is based on FN's semi-automatic, direct impingement platform for the 5.56x45mm, .223 Remington, and .300 AAC Blackout (7.62x35mm) cartridges, and offers something for everyone, whether the application is tactical, collector, or target/competition.
This is what we call a "take-off," and is factory new. We take a complete Factory FN Military Collector rifle and separate the upper from the lower.
Note: The barrel is 14.7", which is manufacturer specifically for this upper. The 14.7" barrel allows FN to pin and weld a standard A2 "birdcage" front sight. The 14.5" barrels require an extended flash hider to get to 16+ inches. Every time a flash hider is pinned and welded, something suffers. With Colt, they use an ungodly amount of silver solder, and you get a big weld spot. When Potomac Armory does our pin and welds for Charli'es custom builds, we get a much more modest weld, but it is still there. FN welds on the side, and then uses a gray paint of sorts to try to cover up the weld. We have had customers complain that the gray paint is ugly. You cannot win. When you pin and weld, something has to give. The gray paint does not quite match the color of the A2 phosphating.
With respct to the look of the pin and weld, we will not accept returns for defect due to color. You can return, subject to restocking and shipping fees, but not for cosmetics of your weld. If you don't like it, you can remove the gray paint with acetone. We do with a Q-Tip. Then, you get the weld. Mostly, don't worry so much about it. Once you fire 100 rounds, the paint and the phosphating is going to turn color, and you will begin to see some green which is from the copper jacketed bullets. This is a war machine, not a museum piece.