Posted: 7/17/2001 7:31:02 AM EDT
| Does only colt have these blocks in their lower receivers? |
| Not all AR lowers have a blocked area... Only my latest Colt blue label does ( a pinned in type). My other blue labels don't and neither do my SP1's... DIAS units fit right in with no modification. I believe BM receivers were fully milled out also (until recently). |