CNC MACHINED 6061-T56 ALUMINUM BODY WITH A 42MM OR 35MM ID INCLUDES 1 RAZOR PIN MACHINED WITH A 0.012" THROAT FOR MINIMUM TARGET OBSTRUCTION EIGHT RAZOR PIN LOCATIONS EIGHT 8-32 THREADED HOLES FOR OPTIONAL INTEGRATED PIN KIT OR TAK KIT 7/16”-20 THREADED HOLE FOR OPTIONAL RHEOSTAT LIGHT TEXTURED INTERIOR CUTS DOWN ON GLARE COMES WITH THREE COLORED LEVELS (RED, GREEN, AND BLUE) INCLUDES THREE STICKS OF FIBER (ORANGE, GREEN, AND BLUE) FEATURES A CHANNEL FOR RETAINING OPTIONAL FIBER OPTIC TUBING EIGHT LOCATIONS FOR AN OPTIONAL LIGHT ADDITION A VARIETY OF OPTIONAL SUNSHADES CAN BE THREADED INTO THE FRONT AND REAR OF THE SCOPE MDR (METAL DECAL RING) SINGLE WHITE RING WITH NO SHADE HELPS WITH SCOPE AND PEEP ALIGNMENT OPTIONAL COLORED DECALS ARE AVAILABLE 1-STEP SUNSHADE OFFERS A SINGLE CENTERING RING DOES NOT REDUCE THE INSIDE DIAMETER 2-STEP SUNSHADE OFFERS TWO CENTERING RINGS IDEAL FOR VARYING LIGHT CONDITIONS THAT AFFECTS PERCEIVED PEEP SIZE REDUCES THE INSIDE DIAMETER OF A 42MM SCOPE TO 35MM AND THE INSIDE DIAMETER OF A 35MM SCOPE TO 29MM LONG SUNSHADE FOR THE SCOPE BODY MAXIMUM SHADE WITHOUT A CENTERING RING LENS COMPATIBLE LONG SUNSHADE MAXIMUM SHADE TO REDUCE GLARE ON THE LENS CAN ONLY THREAD INTO A SHREWD LENS HOUSING ALLOWS FOR A LENS TO THREAD INTO THE SCOPE BODY 42mm SCOPE ALLOWS A LENS TO BE THREADED INTO EITHER SIDE 35mm SCOPE IS LIMITED TO JUST THE TARGET SIDE OF THE SCOPE BOTH SCOPE SIZES USE THE SAME SIZE LENS MADE IN THE USA ALL SHREWD SCOPES ARE MACHINED WITH A RECESSED HEX POCKET TO ADAPT TO A STANDARD ROUND, HEX, OR SQUARE SCOPE MOUNTING ROD. THIS FEATURE IS DESIGNED SO THE SCOPE WILL NOT ROTATE ON THE MOUNTING BRACKET. WHEN MOUNTING THE SCOPE ONTO A SCOPE ROD THE INCLUDED HEX NUT ON THE OUTSIDE OF THE SCOPE SHOULD BE REMOVED BEFORE THE SCOPE ROD IS THREADED ONTO THE 10-32 THREADED ROD. IN SOME CASES THE LONGER 10-32 ROD SHOULD BE SUBSTITUTED FOR THE SHORTER, 1-1/4" 10-32 BOLT INCLUDED IN THE PACKAGING. SQUARE POCKET MEASURES .314" x .314" COMPATIBILITY: B3 - REQUIRES THE USE OF THE 10-32 X 1/2" BUTTON HEAD SCREW THAT COMES STOCK WITH THE B3 SIGHT WHEN MOUNTING THE SCOPE. AXCEL - CAN MOUNT TO THE STOCK AXCEL SCOPE ROD BUT WILL REQUIRE A 10-32 X 2.5" BUTTON HEAD BOLT OR THE STOCK SCOPE ROD CAN BE REPLACED WITH A 1/2" SHREWD SCOPE ROD. SPOT HOGG - REQUIRES A 3/8" SHREWD SCOPE ROD. SURE-LOC - CAN MOUNT TO THE STOCK SCOPE ROD BUT MAY REQUIRE A 10-32 X 2.5" BUTTON HEAD BOLT OR THE STOCK SCOPE ROD CAN BE REPLACED WITH A 3/8" OR .455" SCOPE ROD DEPENDING ON THE SIGHT MODEL (SEE SCOPE ROD PRODUCT DESCRIPTION).