Lower Parts

 BCM Stock Hardware Mounting Kit Don't cheap out on your stock mounting hardware.  The cheap, no name and inferior materials can cause more pain and headache than you would expect.  This stock hardware mounting kit includes quality...

 Super Semi-Automatic Enhanced (SSA-E) Trigger The Geissele Super Semi-Automatic Enhanced (SSA-E) Trigger is built on the chassis of the Geissele SSA, the SSA-E provides enhanced trigger control and weapon accuracy while maintaining the robustness...

  MAGPUL STR Buttstock Mil-Spec ModelThe Magpul STR (Storage/Type Restricted) is a drop-in replacement buttstock for AR15/M4 carbines using mil-spec sized receiver extension tubes. A storage-capable version of the CTR®, the STR has improved...

  Battle Arms Development Enhanced Pin Set (BAD-EPS) For the AR15 / M16 / M4 style rifles.   The set consists of the Enhanced Takedown Pin (BAD-ETP) and Enhanced Pivot Pin (BAD-EPP). Precison Swiss CNC machined from round stock...

  CMC AR-15 / AR-10 Single Stage Drop-in Trigger – Curved Bow CMC Triggers innovative, self-contained, and easy-to-install AR-15 Trigger Groups, have been completely re-tooled to maximize production capacities, incorporate new design...

  ALG Defense ALG Combat Trigger (ACT) The ALG Defense Advanced Combat Trigger (ACT) is designed for those shooters where tradition, value and regulatory concerns are of primary importance. The pull of the ACT is very similar to a standard...

  ALG Defense Quality Mil-Spec (QMS) Trigger The ALG Defense Quality Mil-Spec (QMS) Trigger is designed for those shooters where tradition, value and regulatory concerns are of primary importance. The pull of the QMS is very similar to a standard...

  Timney Triggers AR-15 Skeletonized Small Pin 3lb Trigger. Why settle for a sloppy trigger which can cause a good rifle to shoot badly? Now shooters can replace creepy two-stage triggers with one that is smooth and breaks crisp. The trigger is...

Timney Triggers 683 Replacement Trigger Single-Stage Straight Trigger with 4.50 lbs Draw Weight & Black Finish for Sig MPX Timney is the market leader for Sig replacement rifle triggers. This single-stage trigger is factory tuned for 4.5 lb...

Timney Triggers DH3 Daniel Horner Signature Single-Stage Straight Trigger with 1-3 lbs Draw Weight & Anodized Finish for AR-15 for Sig MPX for Sig MCX Daniel Horner and Timney’s engineers set out to create not only the ultimate AR-style...

2A Armament, Takedown Pins, Titanium, Fits AR15, Black Finish "Mil-Spec" .250 Size Pocketed Design Through Drilled for Weight Reduction 6AL-4V Titanium Black Finish The 2A Armament Titanium takedown pin set features a through drilled design...

Get a rock solid start to your next carbine build with the Aero Precision M4E1 complete lower receiver! This factory-finished lower is ready to roll with a Magpul MOE SL pistol grip and SL-S carbine stock. With high quality components and fantastic...