Just a moment...

This is a review and ad for for XS sights AR armorers block. the Mfg's site list them at $83, Brownells is at $74. They are designed to work with AR-10 and 15. Since a good number of us do our own work I'm just putting it out there.
SGT James Murphy, CPT Jack Durish,
SPC Gary Welch, SGT Mark Anderson,
CPL Douglas Chrysler, Maj Marty Hogan,
CSM Charles Hayden, SMSgt David A Asbury,
MSgt Robert "Rock" Aldi, SSG William Jones,
SSG Michael Noll, MAJ Dale E. Wilson, Ph.D.
SGM Erik Marquez, CW3 Harvey K.
SFC William Farrell, CPL Ronald Keyes Jr
Sgt (Join to see), SSG (Join to see)
1SG Dan Capri, LTC (Join to see)