olka

DI係Drop-in, 即係和gnp的手托一樣長度, 即裝唔洗轉, 除非係用真delta ring.

olka

係, drop-in等同粟米手托和ras的尺寸

引用:

The Troy MRF-DI is a non free floating direct replacement for all M4/M16 carbine plastic hand guards. The Troy Patented clamping design
ensures absolute rock solid mounting which is unequalled in the world today. The MRF-DI provides a true optical mounting platform that
increases the modularity and accuracy of the M4. No gunsmithing is required as the MRF-DI installs in less than a minute and provides true U.S.

[ 本帖最後由 olka 於 19-2-2009 12:30 編輯 ]