Upgrade your AR15 with the QUATTRO-15 Lower Receiver by DesertTech. This drop-in lower is compatible with all standard AR15 upper receivers, and allows your AR to accept DesertTech’s QUATTRO-15 53 round magazines, as well as standard AR-type magazines with the use of an adapter. The only proprietary parts are the magazine release and bolt catch, the QUATTRO-15 Lower Receiver is compatible with all other standard AR15 parts.

Features of the QUATTRO-15 Lower Receiver:

• Compatible with all standard AR15 upper receivers
• Allows the use of DesertTech’s QUATTRO-15 53 round magazines
• Only proprietary parts are the magazine release and bolt catch, compatible with all other AR15 parts
• Can accept standard AR15 mags (with the use of an adapter)