The LA-SF15 is manufactured using the enhanced forged receiver sets that feature an internally flared magwell to assist in ‘high stress’ reloading, a radiused cam pin recess and patented CP-R360 Domed Head Cam Pin fitted to the E-BCG, Enhanced Bolt Carrier Group that reduces wear and friction. The E-BCG also features enlarged and forward facing gas holes that vent gas away from the shooter and the Carriers flared tail enhances accuracy.