KAK INDUSTRY CARBINE TUBE KIT (RECIEVER EXTENSION). INCLUDED IS THE CARBINE BUFFER TUBE, STANDARD CARBINE SPRING, STANDARD CARBINE BUFFER, CASTLE NUT, AND STANDARD END PLATE.. THIS TUBE IS MIL-SPEC SIZE. THIS IS A 6 POSITION MIL-SPEC TUBE. THIS IS A CHROME SILICON SPRING..
KAK INDUSTRY CARBINE TUBE KIT (RECIEVER EXTENSION). INCLUDED IS THE CARBINE BUFFER TUBE, STANDARD CARBINE SPRING, STANDARD CARBINE BUFFER, CASTLE NUT, AND STANDARD END PLATE.. THIS TUBE IS MIL-SPEC SIZE. THIS IS A 6 POSITION MIL-SPEC TUBE. THIS IS A CHROME SILICON SPRING..