Weaver Top Mount Base - Pair Savage A17 A22 Mag - Matte (Blister) SPECIFICATIONS BRAND: WEAVER CA PROP 65: YES CA PROP 65 CHEMICAL: LEAD MATERIAL: ALUMINUM RING & MOUNT FINISH: MATTE RING & MOUNT PIECES: 2-PIECE RING & MOUNT TYPE: WEAVER STYLE DESCRIPTION There's no longer a need to search for front and rear bases for your most popular firearms. Weaver Base Pairs feature tough, lightweight aluminum construction to hold up to the most powerful recoil. The Weaver cross lock design means a tight, secure fit on your firearm. These bases accept all Weaver top mount cross lock rings. Cross-lock channel accepts all Weaver cross-lock rings Front and rear matched pairs for specific firearms Lightweight aluminum construction designed to stand up to the roughest recoil