Palmetto State Armory
PSA Sabre-10 Builder Set (12.5" Quad Rail, Black)
Matched large-frame upper and serialized lower with a 12.5-inch quad rail, barrel nut, and mounting hardware in black.
Quick Specs
- Price
- $340
- Weight
- N/A
- Brand
- Palmetto State Armory
- Category
- lower-receiver
Features
- •Matched Sabre-10 upper and lower receivers
- •12.5-inch black quad-rail handguard
- •Barrel nut and mounting hardware included
- •AR-10-pattern build foundation
- •Barrel, BCG, gas system, and lower parts sold separately
Capability Boosts
Recommended For
Compatibility Tags
Overview
The PSA Sabre-10 Builder Set is a matched large-frame foundation for a custom rifle. This exact configuration pairs the Sabre-10 upper and serialized lower receivers with a black 12.5-inch quad-rail handguard, its barrel nut, and the mounting hardware needed to keep the receiver and rail interface together.
The matched package removes one of the hardest large-frame AR decisions: receiver and handguard fit. AR-10 parts do not share one universal pattern, so buying the upper and rail as separate generic parts can leave the top rails misaligned or the barrel nut incompatible. Keep this upper, lower, handguard, and barrel nut together as one system.
This is not a complete rifle or complete receiver assembly. The builder still needs a compatible barrel, large-frame bolt carrier group and charging handle, gas block and tube, lower parts kit, trigger, recoil system, stock, grip, muzzle device, and magazine. Confirm each remaining large-frame part against PSA's Sabre-10 specifications rather than assuming an AR-15 or unrelated AR-10 part will fit.
Key Features
- Matched Sabre-10 upper and serialized lower receiver
- 12.5-inch quad-rail handguard in black
- Barrel nut and handguard mounting hardware included
- Large-frame AR build foundation
- Exact PSA SKU 51655234916
Pros
- +Matched receiver and handguard package removes a major AR-10 fitment variable
- +Quad rail provides full-length accessory mounting surfaces
- +Barrel nut and mounting hardware ship with the rail
- +Exact configuration matches the black quad-rail set shown in the launch coverage
Cons
- −Foundation only; most operating and furniture parts remain separate
- −Large-frame AR parts are not universally interchangeable
- −The 12.5-inch quad rail is heavier and bulkier than a slim M-LOK rail
- −Serialized lower requires normal firearm purchasing and transfer handling
Detailed Specifications
- platform
- PSA Sabre-10 / large-frame AR
- configuration
- Matched upper, serialized lower, and handguard set
- handguard
- 12.5-inch quad rail
- Finish
- Black
- includes
- Upper receiver, lower receiver, handguard, barrel nut, mounting hardware
- sku
- 51655234916
- serialized
- Yes; normal firearm purchasing and transfer handling applies
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Build Your Custom Configuration
Add the PSA Sabre-10 Builder Set (12.5" Quad Rail, Black) to your build and see how it enhances your platform.