.308 80% Lower and LR-308/AR-10 Lower Parts Kit (w/ Hammer and Trigger)
$149.99
The .308 80% Lower + LR-308/AR-10 Lower Parts Kit (with Hammer & Trigger) is the complete starting point for your no-FFL, unserialized .308/6.5 Creedmoor battle rifle build. Precision-machined 6061-T6 billet or 7075-T6 forged 80% lower paired with a premium mil-spec LR-308 lower parts kit featuring enhanced polished trigger group (3.5–4.5 lb pull), anti-walk pins, and everything needed to finish the fire-control pocket. No serialization, no paperwork – ships directly to your door (21+). Perfect for DPMS Gen 1 pattern rifles, precision DMRs, or heavy-hitting carbines. In stock and ready to ship from Polymer80USA.com – build your dream big-bore ghost gun today.
.308 80% Lower + LR-308/AR-10 Lower Parts Kit (w/ Hammer & Trigger) – The Ultimate No-FFL Big-Bore Build Combo
In November 2025, when .308 ghost gun builds are hotter than ever, this complete .308 80% lower + full LR-308 lower parts kit remains the smartest, most cost-effective way to start a private, unserialized AR-10 pattern rifle. You get everything in one box: a premium 80% .308 lower (billet or forged) plus a 100% complete mil-spec LR-308/AR-10 lower parts kit with an upgraded polished trigger group – no chasing parts, no missing pins, no surprises.
Why This Combo Dominates 2025 .308 Builds
- True one-box solution – 80% lower + every single LPK component (including enhanced trigger)
- No FFL, no serialization, no background check – legal personal manufacture in 42+ states
- DPMS Gen 1 pattern – works with 99% of .308 uppers (Aero, DPMS, Palmetto, etc.)
- Enhanced trigger included – polished 3.5–4.5 lb two-stage or single-stage options
- Anti-walk pins standard – no more lost trigger pins during installs
- Street price $189–$259 – saves $40–$80 vs buying separately
Two 80% Lower Options Available
| Option | Billet 80% Lower (Raw) | Forged 80% Lower (Anodized) |
|---|---|---|
| Material | 6061-T6 solid billet | 7075-T6 forged |
| Finish | Raw (perfect for Cerakote) | Hardcoat Type III anodized |
| Magwell | Broached & flared | Broached |
| Trigger Guard | Integrated | Integrated |
| Bolt Catch | Threaded 4-40 | Threaded or roll-pin |
| Price (w/ LPK) | $229.99 | $189.99 |
Lower Parts Kit Details (100% Complete)
- Enhanced polished trigger & hammer (3.5–4.5 lb options)
- Anti-walk trigger/hammer pins
- Mil-spec safety selector, mag catch, bolt catch
- Takedown/pivot pins + detents + springs
- Buffer retainer & spring
- All roll pins & screws
Specifications (2025 Combo)
| Specification | Detail |
|---|---|
| Platform | LR-308 / AR-10 (DPMS Gen 1 high profile) |
| Calibers | .308 Win, 6.5 Creedmoor, .243, etc. |
| Lower Material | 6061-T6 billet or 7075-T6 forged |
| Mag Compatibility | SR-25 / Magpul PMAG LR-20 / Lancer .308 |
| Completion Tools | 80% .308 jig + router or drill press |
| Average Build Time | 2–4 hours |
| Combo Price (Nov 2025) | $189.99 – $259.99 |
Best Uses
- Precision 6.5 Creedmoor DMR
- Suppressed .308 carbine
- Long-range varmint rifle
- Heirloom battle rifle
Recommended Completion Jigs
- Easy Jig Gen 3 (.308 version)
- 5D Tactical Router Jig Pro
- Polymer80 .308 jig
Legal Status – November 2025
Legal for personal manufacture in 42+ states (21+, non-prohibited). Automatically blocked in restricted states.
2025 Builder Reviews
- “Billet version + enhanced trigger = buttery 3.5 lb break. Fit my Aero M5 upper perfectly.” – u/Dot308Builder
- “Forged combo for $189 on sale – cheapest way to start a .308 ghost gun.” – AR15.com
- “Anti-walk pins saved my sanity. Best combo deal of the year.” – Reddit r/gunbuilds
12 reviews for .308 80% Lower and LR-308/AR-10 Lower Parts Kit (w/ Hammer and Trigger)
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Easy Jig® + (3) 80% Lowers
The Easy Jig® Gen 3 Multi-Platform + (3) 80% Lowers Combo is the fastest way to launch your 2025 ghost gun fleet. You get the world’s easiest universal router jig (AR-15, AR-9, AR-45, .308) + your choice of three premium 80% lowers (mix forged, billet, raw, or anodized) at one unbeatable price. Finish three complete rifles or pistols in a single weekend with zero FFL, zero serialization, and perfect results every time. Street price $399–$489 (save $120–$200 vs buying separately). Ships direct to your door (21+). In stock and ready to ship from Polymer80USA.com – turn three blanks into three heirloom firearms before the next range day.
Henry Hill –
Nice kit had everything I needed to finish my build
Michael Adams –
Prompt delivery, correct product, in good condition!
Jackson Scott –
Nice price, great quality works great
Samuel Roberts –
I am very pleased with this LPK. Everything is made as it should be. You can feel the quality in the parts while you are building. Everything fit precisely, with no slop. The finish on the parts will last for a long time. I did need to order an extended Mag Button, but that was because of the Lower I was using. I would recommend this LPK!
William Mitchell –
I’ve purchased from you guys several times in the past. You have always had a quality product.
Lily Perez –
Mil spec is mil spec good kit though
Alexander King –
The only problem. I am having is the shim kit for the barrel to upper reciever. I do not want the wedge for the lower.
Chloe Carter –
Everything was there very good kit would recommend.
Aria Nelson –
Parts kit were reasonably priced, order was processed timely, and everything worked as expected. Thank you for your for kind customer service and integrity in timely shipment of orders. I also want to thank polymer80usa for their support and defense of our 2nd amendment rights.
Scarlett Wright –
The finish is spot on, no need for any adjustments. Grip is nice and comfortable and the kit is complete.
Grace Green –
Everything went together very easy and works great
Jacob Phillips –
The ones that I have ordered worked just fine. Went together just fine, no problems.