5504082$699.95M2 Bolt. M2HB Barrel Extension, Stripped. Barrel Extension parts are in stock. US, NOS Condition.7161302$89.95M2HB Late Style Breech Lock . New Condition.B8925$49.95M2HB Early Style Breech Lock . US GI, Exc. Condition.7266134$19.95M2HB Barrel Lock Spring. US GI, NOS Condition.5504082-ASSY$749.95M2 Barrel Extension. M2HB Barrel Extension, Complete with all parts. US, NOS Condition.6008784$8.95M2HB Breech Lock Pin. US GI, NOS. Condition.Out of Stock600978Call for PriceReplacement Shank for the M2HB Barrel Extension. US GI, Good Condition. ANM2 .50 Cal Barrel Extension Browning Machine Gun Parts Search for: Search Showing all 7 results Default sorting Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low Sort by name: A to Z 5504082 Barrel Extension, Stripped, M2 .50 cal. $699.95 5504082-ASSY Barrel Extension, Complete, M2 .50 cal. $749.95 B8925 Breech Lock, Early, M2HB. $49.95 7161302 Breech Lock, Late, M2HB. $89.95 6008784 Pin, Breech Lock, M2HB. $8.95 7266134 Spring, Lock, Barrel, M2HB. $19.95 OUT OF STOCK 600978 Shank, Barrel Extension, M2HB. Call for Price