Duchon Defense 80% Lowers – The Strongest, Most Complete Kits in America
Build with absolute confidence using the finest 80% lowers and complete AR build kits on the market. Every Duchon Defense 80 percent lower is CNC-machined in-house from certified 7075-T6 forgings or billet – never cheap 6061 or overseas castings.
Choose forged mil-spec, lightweight Phantom billet, or oversized Apex competition lowers – all with pre-installed threaded bolt-catch pins, broached magwells, and lifetime Cerakote options.
Complete kits include everything: enhanced LPK, jig set, buffer kit, and our famous 52-page color build manual. Add a fully assembled upper and walk away with a ready-to-shoot rifle in hours.
Lifetime replacement warranty (even if you mess up the build)
Same-day discreet shipping from PA
Real human support 7-day support
Whether you’re building your first AR-15, a featherweight 300 Blackout SBR, or a hard-use 308 battle rifle, Duchon Defense delivers the best AR-15 80% lowers, AR-10 80% lowers, forged 80 lowers, and complete 80% build kits available anywhere.
Start your build the right way – shop now and join tens of thousands of satisfied American builders.
308 80% Lower – Billet
$126.98
80% Lower Patriot Pack
$222.99
80 Percent Lowers & Complete AR-15/AR-10 Build Kits – Only at Duchon Defense
Build your dream rifle exactly the way you want it with the strongest, most precisely machined 80% lowers in America. Duchon Defense proudly designs, machines, and finishes every 80 percent lower in-house at our Florida facility – no rebranded imports, no shortcuts.
Why Duchon Defense 80% Lowers Are Superior
- 100% CNC-machined from certified 7075-T6 forgings or billet aluminum (never 6061)
- Broach-cut magwells for drop-free PMAG compatibility
- Integral trigger guard and reinforced buffer tower on all models
- Exclusive “Duchon Flared Magwell” option (adds faster reloads without separate part)
- Threaded bolt-catch pin and takedown-pin detents pre-installed on every lower
- Multi-stage Cerakote or Type-III hardcoat anodizing performed in-house
Our Exclusive 80 Percent Lower Series
Phantom Series 80% Lower – Ultra-lightweight stripped or complete Skeletonized billet design drops 3.2 oz while maintaining full strength. Perfect for ultralight 5.56 or 300 Blackout builds.
Apex Competition 80% Lower – Large-frame & small-frame Oversized magwell, adjustable tension screw, and pre-drilled third-pin hole for registered full-auto carriers (NFA rules apply).
Tactical Forged 80% Lower – The toughest on the market Mil-spec forged 7075-T6 with reinforced front pivot area and upper tension screw. Built for hard-use carbines, DMRs, and 308/6.5 platforms.
Complete 80% Lower Build Kits – Everything in One Box Skip the headache of sourcing parts. Every Duchon Defense complete kit includes: ✓ Machined 80% lower (AR-15 or AR-10) ✓ Premium lower parts kit with enhanced polished trigger ✓ Billet trigger guard & magwell ✓ Mil-spec buffer tube kit with carbine or rifle stock ✓ 100% American-made upper assembly (optional) ✓ All jigs, drill bits, end mills, and our full-color 52-page build guide + video access
Lifetime Warranty & Builder Guarantee
If you break a tool, strip a hole, or the lower ever fails – for any reason – we replace it free for life. Over 25,000 first-time builders have finished flawless rifles using Duchon Defense kits.
Same-Day Shipping & 100% Discreet Packaging
Orders before 3 PM EST ship the same day in unmarked boxes.
Start your next AR-15, AR-10, AR-9, or 45 ACP build with the most trusted 80% lowers for sale online. Choose from raw, anodized, or custom Cerakote finishes.
Shop Duchon Defense 80 percent lowers, **AR-15 80% lowers, AR-10 80% lowers, forged 80% lowers, billet 80% lowers, and complete 80% build kits today – proudly made in the USA, backed for life.