Harrington & Richardson 635 9mm Complete Lower, Black
All Harrington & Richardson lower receivers4 options
Click to see full view
Plan where it ships
Firearms ship to a dealer (FFL), not your door. Pick one now to see your full cost.
Harrington & Richardson
Overview
The Harrington & Richardson 635 9mm Complete Lower is a fully assembled lower receiver designed specifically for the AR-9 platform. Made from durable 7075-T6 aluminum and featuring a forged style, this lower is optimized for 9mm caliber builds, ensuring reliability and performance. With a standard trigger pin size of .154, it allows for compatibility with a wide range of aftermarket triggers, making it a versatile choice for builders focused on 9mm configurations.
Specifications
Harrington & Richardson 635 9mm Complete Lower, Black
4 options
Available Merchants(1)
Prices checked
Price Alert
September 2026 on GunPartPicker
Harrington & Richardson 635 9mm Complete Lower, Black ranked #89 of the 477 lower receivers builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #98 of the 1,036 lower receivers builders have added. Builds with this lower receiver are nearly all chambered in 9mm, mostly on blowback gas (80%, then pistol-length 20%), and nearly all AR-9.
Today the one retailer we track has it in stock. Buying today, the lowest price is $329.99 at Palmetto State Armory.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
Not sure which lower receiver to pick?
We ranked every lower receiver by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Lower Receiver Trends →Check it against the live catalog:
Frequently Built With
The part most often added in each category by the builds that include this one
Tacfire 10" Complete Upper Assembly 9mm 1:10, Black - BU-9MM-10
Breek Arms AR-15 Warhammer MOD2 Ambidextrous Charging Handle Black
FAXON Firearms 9mm AR-15 Bolt Carrier Group for Glock or Colt Magazines - Nitride
Rise Armament Iconic Dual-Blade Two Stage Trigger - Anti-Walk Pins - Green
SB Tactical Adjustable 5 Position Arm Brace No Buffer Tube, Black - SBA4X-01-SB
Vortex Defender-ST 3MOA Micro Red Dot w/ Delta Point PRO Footprint - DFST-MRD3
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
No reviews yet. Be the first to review this product!