OPS INC™ SPR Collar for Daniel Defense MK12

These SPR collars were made specifically to work with the Daniel Defense MK12 to allow mounting of an A length suppressor like the AEM5. Made to the same standards as the standard MOD1 SPR Collar, the taper offset has been adjusted to work with the step on legacy Daniel Defense MK12 barrels that have a 2.3″ offset from muzzle to the locating step in the barrel. Use these in combination with an OPS INC brake.

Future barrel runs (post summer 2024) MAY have the correct 2.4″ offset in the barrel. If you want to be sure before purchase, verify the length of the offset in the barrel. If it is 2.3″, this is the correct collar. If it measures 2.4″, you can use a standard MOD 0 or MOD 1 SPR collar.

These collars have a small laser engraving on the back side to differentiate them from standard SPR Collars.