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
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
