The Colt adapter block conversion kit is a standard factory replacement part for your Colt LE901 rifle. This conversion kit allows you to convert your LE901 rifle to accept a standard pattern AR-15 magazine. The kit includes the replacement buffer and spring which will make your lower ready to slap the 5.56mm Colt upper on it. This kit is made to Colt specifications and tolerances, to ensure perfect fit and operation.

Specifications and Features:
Colt SP99415
Factory Adapter Conversion Kit
Converts the LE901 from .308 Winchester to .223 Remington
Includes all the part required to complete the conversion

Includes:
Magazine well Block
Carbine Buffer
Carbine Spring

Fits:
Colt LE901