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GEISSELE, UPPER RECEIVER GROUP, IMPROVED (COMPLETE) NEAR CLONE, 11.5″, 5.56MM, GEISSELE CHFBARREL, ACH DDC, MK16 DDC, SF4P, REBCG
GEISSELE AUTOMATICS, UPPER RECEIVER GROUP, IMPROVED (COMPLETE) NEAR CLONE, 11.5″, 5.56MM, GEISSELE CHFBARREL, ACH DDC, MK16 DDC, SF4P PIN/WELD, REBCG