416C California Carbine Kit
We are proud to present the most revolutionary product to hit the firearms market in years. If you own an AR15 , M16, or M4 style rifle in either full or semi auto, then you have everything you need to use the Osprey Defense OPS-416C California Compliant Gas Piston Conversion System with semi-auto only bolt carrier on your 10.5″ to 16″ rifle.
Part # OPS-416C
The OPS-416C Gas Piston System fits most standard AR15/M16/M4 full length rifles with an 11.5″ to 16″ barrel and barrel outer diameter equal to, or less than .875″ . This covers more than 95% of all AR15/M16/M4 rifles ever made. There are some exceptions to this and we will note them under the “fit chart” area as they come in. Most likely, if you have an unmodified gun from a quality name brand, the OPS-416C will fit just fine.