Rock-Op Defense Solutions ROD-15B (Baseline)
$1,199.99
A proven tough Mil-Spec and beyond build, Rock-Op style. 16" 4150 CMV 1/7 twist, 5.56/.223 (.223 Wylde & .300 BLK available). 7.4 lbs, 32.75" overall.
10 in stock
Add a Pelican case
Protect this firearm in a hard case. Foam is included. Laser cutting and engraving are optional.
The ROD‑15B Baseline is where Rock‑Op Defense Solutions' custom AR‑15 lineup starts, and it's built like every rifle they make — by hand, not off an assembly line. Every upper and lower is laser‑lapped for a tight receiver fit, the bolt and carrier get a nitride treatment for smoother cycling and easier cleanup, and the 16‑inch 4150 CMV barrel is chambered in versatile 5.56/.223. Round it out with trusted names like Magpul furniture and a Geissele trigger, and every rifle is test‑fired before it ever leaves their Indiana shop. This isn't a rifle assembled from a parts bin — it's built to work right out of the box.
- Matched Cerro Forge Upper & Lower Receiver (7075‑T6 Type III Hard Coat Anodized per Mil‑Spec forgings)
- SAFE – SEMI – AUTO marked
- Mil‑Spec dimension, 6‑position, multi‑vent buffer tube (7075‑T6 Type III Hard Coat Anodized per Mil‑Spec)
- Sprinco White carbine spring (cryogenically treated) w/ carbine‑weight marked “C” buffer
- 16" 4150 CMV 1/7 twist, 5.56/.223 barrel — .223 Wylde & .300 BLK available, multiple profiles available (limited availability)
- M4 feed ramps in both chamber and upper receiver
- HPT/MPI 9310 precision‑ground H&M ROD‑marked nitride bolt
- Chrome‑coated firing pin, nitride cam pin
- M16 8620 bolt carrier (non‑slab), billet extractor
- Billet gas key: Rock‑Op’s exclusive Stack‑Six staking
- Mid‑length gas system (nitride‑finish stainless gas tube), stainless nitride‑coated .750" low‑profile gas block
- Ripcord Industries 15.75" M‑LOK rail (3" USA‑made aluminum M‑LOK section included)
- Magpul PMAG, Magpul K2 pistol grip (black), Magpul MOE buttstock (black), Magpul MBUS Gen 3 sights
- A2 birdcage flash hider, Geissele Mil‑Spec trigger (non‑MIM, S‑marked)
- Rock‑Op Defense exclusive ambi‑safety, Mil‑Spec forged charging handle
We lap every upper receiver for the best possible barrel/receiver marriage. Every rifle is test‑fired and function‑checked before leaving the shop, guaranteed to work right out of the box.
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