What is the difference between the 'No FCG' kit and the full kit?

The 'No FCG' kit excludes the trigger, hammer, and related springs—ideal if you're installing an aftermarket trigger group.

Aero Lower Parts Kit – AR-15 & M5 AR-10 LPK Options

Name: Aero Lower Parts Kit
Brand: Aero Precision
Availability: InStock

**Aero M5 Ar10 Lower Parts Kit Moe Fde** $122.76

**Aero Ar15 Lower Parts Kit Moe Fde** $119.36

**Aero Ar15 Lower Parts Kit Moe Blk** $119.36

**Aero M5 Ar10 Lower Parts Kit Moe Blk** $122.76

**Aero M5 Ar10 Lower Parts Kit No Fcg** $65.71

**Aero Ar15 Lower Parts Kit No Fcg** $52.99

Aero Lower Parts Kit – Build Your AR-15 with Precision

The Aero Lower Parts Kit is the foundation of a reliable AR-15 build. Designed with Mil-Spec precision, trusted by builders and professionals alike, and made in the USA, these kits provide all the internal components needed to complete your AR-15 lower receiver.

Whether you're finishing a stripped lower, upgrading worn internals, or starting a ground-up rifle build, Aero Precision Lower Parts Kits offer unmatched durability, fit, and function.

🔧 What’s Included in the Aero Lower Parts Kit?

Our Aero LPKs are available with or without fire control groups (FCG) and come in multiple configurations:

✅ Trigger components (optional in “no FCG” kits)
✅ Selector, detent, and spring assemblies
✅ Bolt catch, pivot pin, and takedown pin kits
✅ Magazine release and catch
✅ Buffer retainer and spring
✅ High-quality springs & pins
✅ MOE Grip (Black or FDE)
✅ Compatible with Mil-Spec AR-15 & M5 AR-10 lowers

Some kits exclude the trigger guard to allow for customization or use with billet lowers.

🛠 Aero Lower Parts Kits Available:

Hed Dek goes here.
Model	Includes FCG	Grip Style	Compatible Platform
AR-15 LPK (MOE, FDE)	✅ Yes	Magpul MOE FDE	AR-15
AR-15 LPK (No FCG)	❌ No	None	AR-15
M5 AR-10 LPK (MOE, Black)	✅ Yes	Magpul MOE Black	M5 / AR-10
M5 LPK (No FCG)	❌ No	None	M5 / AR-10

SOURCE: Sources

All parts are made to strict tolerances and tested for long-term durability in tactical, competition, and range-use applications.

✅ Why Choose an Aero Precision Lower Parts Kit?

🔒 Tight Mil-Spec tolerances – guaranteed fit with most standard AR lowers
🔩 Durable materials – built to handle thousands of rounds
🎯 Perfect for custom builds or refreshing older rifles
🇺🇸 Made in the USA with industry-leading quality control
🧱 Compatible with other Aero components for seamless integration

🗣 Customer Reviews

“Perfect fit and flawless function.”
“Used this kit for my first AR build and everything fit like a glove. Super smooth install, no missing parts.” – Ben R.

“Top quality from Aero as always.”
“Replaced worn-out parts on my carbine. Everything in the kit feels solid and well-machined. Fast shipping too.” – Ty M.

🧠 Frequently Asked Questions

Q: Will this Aero Lower Parts Kit fit my AR-15 lower?
A: Yes, Aero’s LPKs are Mil-Spec and compatible with most AR-15 lowers from other manufacturers.

Q: Does this kit include a trigger guard?
A: No. Most Aero kits do not include a trigger guard, allowing for compatibility with billet or custom trigger guards.

Q: What’s the difference between the “No FCG” and full LPK kits?
A: The “No FCG” kits exclude the fire control group (trigger, hammer, springs) for users planning to install an upgraded trigger system.

Shop Aero Lower Parts Kits at Mounts Plus

Whether you're building a rifle from scratch or updating a lower receiver, the Aero Lower Parts Kit gives you everything you need for a secure, precise, and long-lasting build. Choose your configuration and finish—and build with confidence.

In stock. Fast shipping. Trusted support.

Order your Aero Lower Parts Kit today and complete your AR build the right way.