Product DescriptionThe Battle Arms Development Enhanced 9mm Blowback AR-15/AR9 Bolt Carrier Group is built for reliable performance in 9mm blowback setups and is compatible with both COLT and GLOCK magazine configurations. It features a durable Mil-Spec 8620 heat-treated steel carrier with a hard nitride black finish, a reliable external AR-15 style extractor with O-ring and spring, and a ramped bottom geometry designed for broad AR-15 trigger compatibility. A reinforced firing pin is retained with a standard firing pin cotter pin, and the charging handle interfaces directly on the bolt carrier surface to withstand vigorous manipulation. This BCG is also full-auto compatible and includes a removable carrier weight.Product Highlights Enhanced 9mm blowback AR9/AR-15 bolt carrier group compatible with COLT and GLOCK magazine patterns Mil-Spec 8620 heat-treated steel carrier with durable hard nitride black finish Reliable external AR-15 style extractor with O-ring and spring for consistent extraction Ramped bottom geometry for compatibility with most AR-15 triggers and full-auto capable operation Removable carrier weight and dust cover compatibility for flexible buildsSpecs Brand: Battle Arms Development Manufacturer Part Number: BAD-BCG-9MM UPC: 810033781186 Platform Compatibility: AR-15 / AR9 9mm blowback Magazine Compatibility: COLT and GLOCK configurations Material: Mil-Spec 8620 heat-treated steel carrier Finish/Color: Hard nitride black Extractor: External AR-15 style extractor (with O-ring and spring) Trigger Compatibility: Compatible with most AR-15 triggers (ramped geometry) Dust Cover Compatibility: Yes Carrier Weight: Removable Total Mass: 14.9 ozDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.