I have a SCAR25 lower in FDE. Is it normal for the pinholes to be tight when I install the lower parts?

Yes, the FDE units are painted on the exterior of the lower. In some instances the paint makes it difficult when installing the lower parts into the SCAR25 lower. If some fitment may be required due to paint build up. Also the FDE paint has ceramic materials that can result in slight gritty feeling in some receiver holes. This will go away once the lower has been used and the ceramic particles are worked in.

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