Aim7 Welin-Lock Rear Mount 1.125×28 (1 1/8×28) SUS303 STEEL

Description Aim7 Welin-Lock Rear Mount 1.125×28 (1 1/8×28) SUS303 STEEL Aim7 Welin-Lock Rear Mount screws into the rear of the suppressor tube to allow for attachment via Welin-Lock. To mount your suppressor using Welin-Lock, you will need this Welin-Lock Rear Mount as well as a Welin-Lock barrel adapter (sold separately). Features SUS303 Stainless Steel Compatible with Welin-Lock barrel adapters Cosmetic geometry for a firm grip Inside taper locks rear mount onto the barrel adapter Overall 1.193″ SUS303 (AISI 303 / EN 1.4305) Stainless Steel — Hardness Material Type: Austenitic stainless steel, free-machining grade (higher sulfur content for better machinability). Typical Hardness (Annealed / Solution Annealed condition): ~160–190 HB (Brinell Hardness) Equivalent to about 85 HRB (Rockwell B scale). After Cold Working / Work Hardening: Can reach ~200–240 HB (approx. 95 HRB). Heat Treatment: Not hardenable by heat treatment (like most austenitic stainless steels). Only strengthened by cold working.