https://pioneerarmsllc.com/product/promag-colt-ar15-223rem-42rd-blk/
PROMAG COLT AR15 223REM 42RD BLK - Pioneer Arms LLC
PROMAG COLT AR15 223REM 42RD BLK
pioneer armspromagcoltblkllc
https://www.impactguns.com/Rifle-Magazines/Pro-Mag-AR-15-Magazine-223-5-56-42rd-Black-Polymer-708279012679-COLA16B/
Pro Mag AR-15 Magazine, .223/5.56, 42rd, Black Polymer - Impact Guns
Pro Mag AR-15 Magazine, .223/5.56, 42rd, Black Polymer. ProMag COLA16B. A magazine for AR-15 / M16 rifles and carbines. The magazine body and follower are...