04-19-2012, 12:10 PM
Typan Wrote:Does anyone know if Alexander Arms offer their current 6.5 Grendel upper being able to mount on the old large pin/small pin Colt lowerMore info needed.... Do you mean you have a large front takedown pinned Colt lower (SP1 and similar)?
If so:
http://blackrifleworks.com/colt-ar-15-un...p-164.html
Or
http://shop.ar15sport.ihoststores.com/pr...T-CLT-ADAP
Or
http://www.brownells.com/.aspx/pid=24948...ER-ADAPTER
There are likely also others. What is the diameter of your front takedown pin? Is it .315 inch?

