***Updated 11/28/16*** I like guns. I'm not mechanically inclined. The AR seems like the most versatile tool in the history of self-defense. I decided to build one from scratch. The problem is I'm indecisive and I've got champagne tastes. That means I need to build at least two rifles so that I can better sample the options. My goal isn't to build the most cost-effective rifle. It's to build what I want, taking into consideration aesthetics and practicality more so than price. I've begun with the lowers. So far here's what I've got for parts. I'll update as I add or switch out. Pictures of the parts and build process to follow. Even if you don't follow the thread let me know what you think of the builds. Good or bad, I'm curious to know your opinions. Spoiler: Build #1 FINISHED (***Note that I switched out the lower at the end of the build. The lower this one replaced will be used in Build #5.) LOWER Stripped Lower: Spike's (No Logo) Buttstock: ACE Skeleton stock Sling QD Attachment: ACE UMPB Trigger: Franklin Armory BFS Binary Trigger Guard: TacFire Grip: Ergo Suregrip Ambi Bolt Catch: Phase 5 Tactical EBRv2 Safety Selector: Franklin Armory (BFS-Compatible) Mag Catch: Norgon Ambi Mag Release: Seekins Precision Buffer Spring: JP Tuned & Polished Front/Rear Takedown Pins: Strike Industries UPPER Stripped Upper: MAS Defense Slickside Barrel: Voodoo Innovations 5.56x45, 16", Mid-Length, 1:7 Twist, .750 Gas Block, Government Countour, 4150 CM, Melonite Muzzle Device: Omega Manufacturing Faux-Suppressor Bolt Carrier Group: AIM Surpluss Handguard: AR15 Solutions 15" Free Float Tube Handguard Wrap: 3M Vetrap Charging Handle: Stag Arms Gas Block: Omega Manufacturing Micro Screw-On Optic: Aimpoint H-1 Micro Optic Mount: LaRue QD Low-Rise Optic Cover: Tango Down (**** Pictures show Raptor charging handle instead of the Stag standard GI. Future modifications could include filing down some Battle Arms safety lever to fit the BFS cam, treating the bolt catch logo with Aluminum Black, and similarly covering up the Aimpoint markings.) For those not familiar with the Franklin Armory binary trigger, here's a guy showing what it can do. Spoiler: Build #2 FINISHED LOWER Stripped Lower: Black Rain Ordnance Fallout 15 Buttstock: Magpul PRS Recoil Adapter w/Pad: M/P with Pachmayr Large Field Pad PRS Monopod rail cover modified to accept riser w/monopod Monopod: Accu-shot 3.75"-4.65" Mini Riser: Yankee Hill Machine 1" PRS QD Sling Mount: Parker Mountain Machine Buffer Tube: Black Rain Buffer Spring: JP Silent Capture Trigger: Geissele SSA-E Trigger Pins: KNS Anti-Rotation Pins Grip: Ergo Suregrip Lefty Front Pivot/Rear Takedown: Tactical Supply Biohazard Pins Bolt Catch/Battery Assist Device: Phase 5 EBRv2 Safety Selector: Battle Arms BAD-ASS (Long Crank / Short Crank) Magazine Catch: Norgon Ambi Magazine Release: Seekins Precision Lower Pin & Spring Kit: CMMG UPPER Stripped Upper: Black Rain Ordnance Fallout 15 Barrel: JP 20" .223 Wylde Charging Handle: Rainier Arms Avalanche JP Enterprises Thermal Dissipator Muzzle Brake: VG6 Epsilon Muzzle Brake Attachment: VG6 CAGE Device Bolt Carrier: JP Low Mass JP Bolt Carrier Pin Package Handguard: JP/V-Tac 12" Free Float JP Front Sight Rail JP 2" Rail JP QD Sling Swivel Mount Front & Rear iron Sights: Knight's Armament Micro 600 meter Gas Block: Syrac/Black Rain Adjustable Low Profile Gas Tube: Spike's Tactical Forward Assist Assembly: Strike Industries Ejection Port Cover: Tactical Gear Junkie Bi-pod: Accu-Shot Atlas with QD Lever Scope Mount: Bobro QD Scope: Leupold Mark IV EDIT: This is addictive. Here's some other builds inspired through all the trial and error. #6 is still in progress but the others are done (more or less ). Spoiler: Build #3 FINISHED LOWER Stripped Lower: Anderson Manfucaturing Furniture Kit: MDI / Magpul (Reaper Black Stock, Hanguard, VFG, Trigger Guard, PMag) Buffer Tube: Omega Manufacturing Buffer: Omega Manufacturing Buffer Spring: JP Tuned & Polished End Plate: Tapco Trigger: Rock River Arms National Match 2-Stage Grip: Ergo Ambidextrous Reaper Black Takedown/Pivot Pin Set: Laser's Edge Studio Safety Lever: Battle Arms Development Magazine Release Button: Seekins Precision Bolt Catch / Battery Assist Device: Phase 5 Tactical EBRv2 Lower Spring Kit: Strike Industries Magazine Catch: Norgon UPPER Stripped Upper" Aero Precision Barrel" Colt .556 x 45, 14.5", w/Front Sight Block and Barrel Nut, Handguard End Cap, YHM Phantom Flash Hider Welded Bolt Carrier Group: Crosshill Technologies Black Nitride Delta Ring Assembly: Omega Manufacturing Gas Tube: Omega Manufacturing Handguard: Magpul Reaper Black Charging Handle: Rainier Arms Ejection Port Cover Assembly: Tactical Gear Junkie BUIS-Rear: Magpul Reaper Black Spoiler: Build #4 FINISHED LOWER Stripped Lower: Anderson Manfucaturing Furniture Kit: Magpul MOE Buffer Tube: Omega Manufacturing Buffer: Omega Manufacturing Buffer Spring: JP Tuned & Polished Trigger: Rock River Arms National Match 2-Stage Trigger Guard: TacFire End Plate Sling Adaptor: AR-Stoner Grip: Ergo Suregrip Takedown/Pivot Pin Set: Squirrel Daddy Safety Lever: Stag Arms Ambi Magazine Catch Assembly: AR-Stoner Bolt Catch: AR-Stoner Battery Assist Device: Troy Lower Spring Kit: Strike Industries UPPER Upper: Anderson Manufacturing Charging Handle: Omega Manufacturing Barrel & Gas Tube: Daniel Defense 5.56x45, 16", 1/7 Twist, Carbine Length Gas, Cold Hammer Forged, Phosphate Muzzle Device: Miculek Muzzle Brake Bolt Carrier Group: Crosshill Technologies Hadguard: Magpul Handguard-Cap: LBE Unlimited Delta Ring Assembly: Omega Manufacturing Vertical Foregrip: Magpul Gas Block: Omega Manufacturing Forward Assist Assembly: High Standard Ejection Port Cover: Sabre Defense Ejection Port Pin, Spring, Clip: Mammoth BUIS-Rear: Magpul MBUS BUIS-Front: Yankee Hill Manufacturing Spoiler: Build #5 FINISHED (***Note that this also takes standard AR magazines. There's a mag-well adapter that holds the belt-fed links. Drop it out and slap a magazine in.) LOWER Stripped Lower: Spike's Tactical Multi-Cal Red Spider Logo Stock: ACE Skeleton Stock Standard Buffer Spring: Ares Defense Buffer: Spike's Tactical T2 Trigger: Franklin Armory BFSIII Binary Trigger Guard: Spike's Tactical Grip: Ergo Ambi Sure Grip Front Pivot / Rear Takedown Pins: Battle Arms Safety Lever: Franklin Armory Magazine Release Button: Seekins Precision Bolt Catch: Ares Defense Magazine Catch: Norgon Ambi QD Stock Attachment: ACE UMPB UPPER Upper Receiver: Ares Defense MCR-037 BUIS-Front/Rear Set: Ares Defense Barrel Handle: Ares Defense Vertical Foregrip: G.P.S. Grip-Pod #02 Optic Elcan Specter OS 3.5x Here's the company's promo video. Unfortunately this isn't full auto, but the trigger is the new Franklin Armory BFSIII binary. That means that when you flip it to what would be the full auto position It fires a round when you pull it and fires a round when you let go. Yes, that's legal. And in case you missed it, the earlier version of this trigger is in build #1. Spoiler: Build #6 IN PROGRESS LOWER Stripped Lower: Spike's "The Jack" Buttstock: Magpul UBR Trigger: Geissele SSA-E Trigger Pins: KNS Grip: Ergo Suregrip Left-Handed Bolt Catch: Seekins Precision Safety Selector: Battle Arms BAD-ASS (Long Crank / Short Crank) Mag Catch: DPMS Mag Release: Seekins Precision Rear Takedown Pin: Colt Front Pivot Pin: High Standard Sling: Specter Gear Viper Gen 2 UPPER Stripped Upper: Gibbz Arms Left-Handed Side-Charger (w/o FA and Dust Cover) Barrel: AR15 Performance 16" 6.8 SPCII 5R Scout Profile, Mid-Length, 1:11.25 Twist Muzzle Device: JAL Linear Device Bolt Carrier Group: Crosshill Technologies Slab-Side Black Nitride Bolt: AR15 Performance 9310 Alloy NiB Coating Handguard: 15" Intacto Arms Free Float ***To Be Changed Gas Block: SLR Rifleworks Sentry 7 *The Upper and Handguard will be white Cerakote.