Bolt face cleaing
I clean my 15-22 after every 70-100rds at the range. I put cleaning emphasis on the face of the bolt. I usually see a crud buildup on the bolt face where the brass cartridge meets it. Sometimes you can see a crud lip buildup in circumferences of the edges of the cartridge inset. Excessive buildup here might lead to extractor issues. I always scrub that area with a plastic brush and CLP.
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