Duramag AR-15 .223 Remington/5.56 NATO 20 Round Rifle Magazine Black/Orange. In a nutshell without giving too many corporate secrets away Advanced Proprietary Coatings which also contains Black-T attaches at the molecular level and greatly decreases the coefficient of friction providing a smooth problem-free operation greater performance and an extended service life through an unparalleled lubricity. C Products Defense is one of the select few magazine manufacturers to use the technology of fully automated robotic welding stations. This allows us to control and monitor automatically each magazine weld ensuring that each weld is dimensionally correct. A computer printout is available from every shift to verify the quality. Any weld not meeting the load specifications is immediately rejected. All CPD magazines feature the new ''snap on'' anti-tilt follower. The use of the .020 gauge material in stainless steel combined with increased interior dimensional room enhances proper stacking of the rounds and dramatically reduces failure due to jams. Functionally this magazine is far superior to any in todays market. All CPD magazines feature the new ''snap on'' anti-tilt follower. Specifications for Duramag AR-15 .223 Remington/5.56 NATO 20 Round Rifle Magazine: Manufacturer: Duramag Magazine Capacity: 20 Round Caliber: 5.56x45mm NATO .223 Remington Gun Make: AR Platform Gun Model: AR-15 Quantity: 1 Condition: New Package Contents: Duramag AR-15 .223 Remington/5.56 NATO 20 Round Rifle Magazine 1 Mag Sealed Plastic Bag What firearm models does the manufacturer say Duramag AR-15 .223 Remington/5.56 NATO 20 Round Rifle Magazine is compatible with? The manufacturer says that Duramag AR-15 .223 Remington/5.56 NATO 20 Round Rifle Magazine is compatible with AR-15Duramag 2023001178CPD-20RD: AR-15 .223 Remington/5.56 NATO 20 Round Rifle Magazine Black/Orange