Silverlode
Ultimate Member
Mulit-part question but should be easy for anyone in the know.
What is the difference in size between the mil-spec and civilian?
What size does the Colt LE6920 have?
What size does the Colt AR6721 (HBAR) have?
Are castle nuts one size fits all for these or specific to one or the other?
Thanks
What is the difference in size between the mil-spec and civilian?
What size does the Colt LE6920 have?
What size does the Colt AR6721 (HBAR) have?
Are castle nuts one size fits all for these or specific to one or the other?
Thanks