Thread size is 5/8-24 on the body of both comps and the .223 comes with a thread reducer bushing that has a 1/2-28 thread which is the most common for the .223. .
Comp Dimensions: 2"1/8 Long X .975 Diameter. LIMITED LEGAL
Arredondo SPEED LOADER GUIDE ROD SKU: GR-3 Price: $3.60
Arredondo Benelli Speed Bolt Carrier Release SKU: CRB-1 Price: $21.95
Arredondo AR-15 Magazine Pad SKU: AR/MB Price: $11.00