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These new plates have been made from the dimensions of original demilled Russian and Bulgarian plates.
This plate welds to the rear lower section of the receiver to strengthen that area when using folding stocks. The bend is in the right spot and not touching the hole so there are not fitting issues. 2.25' long.
This plate was used on the Russian and Bulgarian sidefolding stock rifles since the rear trunnion doesn't support the bottom of the receiver.