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to provide a fast, secure, and enjoyable experience. by Sharky, from CA, United States Asked on July 5, 2021
Yes, this BCG will require some re-tuning and timing of the rifle. This can be achieved with a stronger spring and heavier buffer or with an adjustable gas block. The BCG is compatible with most action springs, including the Geissele Super 42, however, the exact timing your rifle requires will depend heavily on other factors so we cannot make recommendations for a specific build.