AR 15 Buffer Tube Parts (Receiver Extension)

Various sets and individual items that make up the receiver extension are all here on AT3.

The buffer tube, spring, buffer, castle nut, and the locking ring are all available for the milspec or the commercial variants. READ MORE

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Other Lower Receiver Components for AR 15:

AT3™ Mil Spec Buffer Tube Kit For AR-15AR 15 Buffer Tube Parts (Receiver Extension)
1005 Tactical 2-Stage Nickel Boron AR-15 Trigger Assembly - 4.5 lb Pull WeightAR-15 Triggers
Hogue AR-15/M-16 OverMolded Collapsible Buttstock (Commercial)Buttstocks
AT3™ 2-Stage Lower Parts Kit with 1005 Tactical Nickel Boron Trigger - No Grip or Trigger GuardLower Parts Kit for AR-15
Magpul M3 25 Rd Magazine - 308 Win/7.62NATO Caliber - Fits DPMS/SR25/LaRue OBR - MAG292Magazines & Parts
Magpul MOE+ Grip w/ Storage Compartment for Pistol GripPistol Grips