KAK Industry KAK Sig SB15/SBX Tube Length Adjustment Kit Ring Set

Features: - Designed to work only with kak sig tubes standard and super versions - These rings will not work with other manufactures tubes - Used for adjusting the length of the sig brace for proper fit on the forearm Specifications: - These rings are machined 6061 aluminum - Ring spacer system mimics the last three notches on a carbine buffer tube (6 position tubes use .625 spacing) - Rings are slid on before the sig brace and trapped against the shoulder - Included spacer rings .625 and 1.250 - Possible spacer adjustments .625 longer, 1.250 longer, and 1.875 longer (.625+1.25) - Long armed shooters will enjoy the longer length possible with this kit on their kak sig tubes - Upgrade kit includes .625 spacer ring and 1.250 spacer ring - Buffer tube and sig brace show for illustration and not included - This buffer tube system is patent pending