Alumagrips Slimline Tactical Checkering Magwell Grip, Black, Compact Machined from 6061-T6 Aluminum with a very slight textured finish on all smooth areas Excellent grip without snagging clothes or abrasion of bare skin All finishes exceed MIL Spec anodizing The same gripping power wether wet or dry. No bending , splitting or cracking.ever Machined from 6061-T6 Aluminum with a very slight textured finish on all smooth areas Excellent grip without snagging clothes or abrasion of bare skin All finishes exceed MIL Spec anodizing The same gripping power wether wet or dry. No bending , splitting or cracking ever