Home / AR Upper Components / CMMG EJECTION PORT COVER KIT MK3 “BCM LOW PROFILE GAS BLOCK 625” has been added to your cart. View cart CMMG EJECTION PORT COVER KIT MK3$14.95 2 in stock [] CMMG EJECTION PORT COVER KIT MK3 quantity Add to cart UPC: 815835016429 SKU: 38BA538 Category: AR Upper Components Tag: CMMG Product ID: 3433 Description Description Includes Mk3 ejection port, rod, and spring. You may also like… CMMG EJECTION PORT COVER KIT MK3 $14.95 Add to cart Related products SOLGW Gas Block Low Profile .750 w/ Set screws – V2 $45.00 Add to cart LBE Unlimited ARBGR – Bolt Gas Rings $2.99 Add to cart Out of stock AERO PRECISION .308/762 BOLT CARRIER GROUP BLACK NITRIDE $234.99 Read more YHM DUST COVER ASSY 300 BLK $13.75 Add to cart