Your basket is empty.

Basket

Help and contact

Free standard delivery over £199

100-day return policy

Brownells UK - World's Largest Supplier of Gun Parts, Gunsmith Tools & Shooting Accessories

United Kingdom

My Account (Sign in)

Shopping list

(0)

Basket

Shop
Schematics
Manufacturers

Newsletter

Sale

Firearms
Rifle Parts
Handgun Parts
Shotgun Parts
Magazines
Reloading
Shooting Accessories
Gunsmith Tools
Optics & Mounting
Gun Cleaning & Chemicals
—
—
—

Home Rifle Parts Receiver Parts Parts Kits Lower Parts Kits

Lower Parts Kits

Restrict search

Products
Bestseller
Top rated
Sale
New

Filter by: then

Filter by:

Sort by:

Display per page:

Page: 1 2 3 4 < >

Lower Parts Kits - Products

1 - 20 of 61 results

Page: 1 2 3 4 < >

CMMG AR-15 LOWER PIN & SPRING KIT
AR-15/M16 LOWER SPRING KIT

CMMG

In stock

£22.90 *

The kit includes 17 essential pins and springs for AR-15 lower receiver assembly or replacement.
Components such as trigger and hammer springs, pins, detents, and safety selector parts are part of the kit.
Manufactured by CMMG, it is a convenient package for building or maintenance of AR-15 lowers.

3.3

ZRO DELTA AR-15 LOWER PARTS BUILDER KIT
AR-15 LOWER PARTS KIT

ZRO DELTA

In stock

£59.90 *

2.9

ZRO DELTA AR-15 LPK NO TRIGGER GUARD OR GRIP
AR-15 LOWER PARTS KIT

ZRO DELTA

Reordered

£69.90 * £69.90 - £79.90*

The kit features an Enhanced Longitudinal Grind (ELG) trigger for a smoother pull and reduced grittiness.
It is designed for AR-15 platforms and made by ZRO Delta.
The longitudinally-ground trigger is polished for an enhanced basis for trigger jobs.

4.1

AERO PRECISION M5 MOE SL LOWER PARTS KIT MINUS FCG - BLACK
AR .308 M5 LOWER PARTS KITS W/ MOE SL, NO FCG

AERO PRECISION

In stock

£99.90 * £99.90 - £109.90*

The kit includes components for assembling an Aero Precision M5 Lower Receiver, with a Magpul MOE SL Grip in Black.
Specific parts for the M5 model are provided, such as M5 Takedown Pin, Pivot Pin, Bolt Catch, and Extended Magazine Catch Button.
The kit does not include a fire control group, making it suitable for those who prefer to use an upgraded trigger.

CMMG LOWER PARTS KIT AR-15
AR-15 LOWER PARTS KIT

CMMG

In stock

£94.90 *

The kit contains all essential internal parts for completing or rebuilding an AR-15 lower receiver.
Parts are high-quality, designed to work together smoothly, and come in color-coded bags for easy assembly.
Includes a Mil-Spec trigger with a single-stage service rifle pull and a complete set of pins, springs, and detents.

AERO PRECISION EPC LOWER PARTS KIT WITH MOE GRIP BLACK
EPC LOWER PARTS KIT WITH MOE GRIP

AERO PRECISION

In stock

£139.90 *

The kit includes essential components for assembling an EPC Lower Receiver, such as takedown/pivot springs, pins, bolt catch parts, and safety selector components.
Parts are AR15 compatible and the kit features a Magpul MOE® grip, with all necessary springs and detents for the lower receiver assembly.
Manufactured by Aero Precision, the kit is designed for AR-15 lower receivers and includes proprietary parts pre-installed from the factory.

New

LUTH-AR AR-308 LOWER PARTS KIT - COMPLETE
AR-308 LOWER PARTS KIT

LUTH-AR

In stock

£134.90 * £69.90 - £134.90*

AERO PRECISION EPC LOWER PARTS KIT MINUS FCG/GRIP
EPC LOWER PARTS KIT MINUS FCG/GRIP

AERO PRECISION

In stock

£64.90 *

The Aero Precision EPC Lower Parts Kit is designed for assembling EPC Lower Receivers and excludes fire control group, pistol grip, and trigger guard.
Kit includes essential components such as Takedown/pivot springs, detents, pins, Bolt Catch parts, Safety Selector parts, Buffer retainer, and their respective springs and detents.
Parts are AR15 compatible, with proprietary parts pre-installed from the factory, ensuring ease of assembly and reliable performance.

AERO PRECISION AR-15 LOWER PARTS KIT W/ MOE SL GRIP - BLK
AR-15 LOWER PARTS KITS W/ MOE SL GRIP

AERO PRECISION

In stock

£164.90 * £154.90 - £164.90*

The Aero Precision AR-15 Lower Parts Kit features Magpul MOE SL® grips available in Black and FDE, designed for versatility.
This kit includes all necessary components to assemble a Gen 2 AR15 Lower Receiver, including a Magpul MOE Trigger Guard and a mil-spec Fire Control Group.
Components such as Takedown Pins, Bolt Catch, Magazine Catch, Buffer Retainer, Safety Selector, Trigger, and Hammer assemblies are included in the kit.

AERO PRECISION M4E1 MOE SL LOWER PARTS KIT MINUS FCG - FDE
M4E1 LOWER PARTS KITS W/ MOE SL GRIP, NO FCG PARTS

AERO PRECISION

In stock

£79.90 *

The M4E1 Lower Parts Kit is designed for versatility and comes with a Magpul MOE SL® Grip, available in Black or FDE.
This kit is tailored for the Aero Precision M4E1 Lower Receiver and does not include a fire control group (FCG), making it suitable for those who plan to purchase an upgraded trigger separately.
It includes all necessary components for assembly except for the FCG, such as takedown pins, bolt catch, magazine catch, buffer retainer, safety selector, and associated springs, detents, and screws.

STRIKE INDUSTRIES AR 308 ENHANCED LOWER PARTS KIT W/O FCG
AR308 ENHANCED LOWER PARTS KIT, NO TRIGGER, HAMMER, DISCONNECTOR

STRIKE INDUSTRIES

In stock

£89.90 *

The kit includes essential parts for building or upgrading an AR-10 lower receiver except for the trigger group, pistol grip, and trigger guard.
Features Strike Industries' signature enhanced parts like the bolt catch, magazine release, and HEX Selector Switch with 60/90 degree angles.
Compatible with AR-10, DPMS/LR308, SR-25 lower receivers and newer gen Aero Precision M5 lowers, but not with ArmaLite AR-10 or some billet lowers.

AERO PRECISION AR-15 MOE SL LOWER PARTS KIT MINUS FCG - FDE
AR-15 MOE SL LOWER PARTS KITS W/O FIRE CONTROL GROUP

AERO PRECISION

In stock

£79.90 * £79.90 - £94.90*

The kit includes components to assemble an AR15 Gen 2 Lower Receiver, excluding the fire control group.
It comes with Magpul MOE SL Grip and Trigger Guard, available in Black or FDE.
Manufactured by Aero Precision, this kit is designed for versatility and does not include a fire control group.

🔧 Upgrade your AR-15 with the Ultra Duty Lower Parts Kit by Geissele! Precision machined for durability. Get the best for your build. Learn more! 🔫

GEISSELE AUTOMATICS AR-15 ULTRA DUTY LOWER PARTS KIT BLACK
AR-15 ULTRA DUTY LOWER PARTS KITS

GEISSELE AUTOMATICS

In stock

£184.90 * £184.90 - £189.90*

The Geissele Super Duty Lower Parts Kit is designed for building high-quality AR-15 lower receivers and includes a Geissele trigger group.
All components are machined from stainless steel in North Wales, PA, ensuring durability and corrosion resistance.
The kit features enhanced components like the Maritime Bolt Catch, Ambidextrous Super Configurable, and Ultra Precision Trigger Guard for improved usability.

CMC TRIGGERS LOWER PARTS KIT
AR-15 LOWER PARTS KIT

CMC TRIGGERS

In stock

£59.90 *

The CMC Triggers AR-15 Lower Parts Kit is designed to complete a lower receiver without unnecessary components like the trigger and hammer.
All included parts meet or exceed military specifications, ensuring high-quality replacements or upgrades for your AR-15 build.
By excluding the trigger, hammer, and associated springs, the kit allows for customization and avoids the cost of unwanted mil-spec parts.

ALG DEFENSE AR-15 LOWER PARTS KIT WITH GRIP W/ QMS TRIGGER
AR-15 LOWER PARTS KIT W/ QMS TRIGGER

ALG DEFENSE

In stock

£144.90 * £139.90 - £144.90*

The kit includes a complete set of lower parts for an AR-15, featuring a Quality Mil-Spec (QMS) Trigger.
Components such as the bolt catch, mag release, safety detents, and takedown pins are included, with the option to get the kit with or without a grip.
ALG Defense is the manufacturer of the kit, ensuring compatibility with AR-15 platforms.

AERO PRECISION M5 LOWER PARTS KIT W/ MOE SL GRIP - FDE
AR .308 M5 LOWER PARTS KITS W/ MOE SL GRIP

AERO PRECISION

In stock

£159.90 *

The kit includes components for assembling an Aero Precision M5 Lower Receiver, specifically designed for AR .308 configurations.
It comes with a Magpul MOE SL® Grip available in Black or FDE, and buyers can choose between a mil-spec Fire Control Group or a MINUS FCG option.
The package contains M5 specific parts such as Takedown Pin, Pivot Pin, Bolt Catch, and an Extended Magazine Catch Button for a complete build.

AERO PRECISION AR-15 M4E1 LOWER PARTS KIT W/ MOE GRIP BLACK
AR-15 M4E1 LOWER PARTS KITS W/ MOE GRIP

AERO PRECISION

In stock

£139.90 *

The Aero Precision AR-15 M4E1 Lower Parts Kit includes a Magpul MOE Grip and is designed specifically for the M4E1 lower receiver.
This kit does not come with a trigger guard as it is integrated into the Aero M4E1 lower receiver.
The kit contains a comprehensive set of components necessary for assembling the lower part of an AR-15, excluding the trigger guard.

AERO PRECISION AR 308 M5 LOWER PARTS KIT NO FCG/ PISTOL GRIP
AR 308 M5 LOWER PARTS KIT NO FCG/ PISTOL GRIP

AERO PRECISION

In stock

£79.90 *

The Aero Precision AR 308 M5 Lower Parts Kit is designed for building M5 .308 AR lower receivers and excludes the fire-control group and pistol grip.
This kit is compatible with DPMS-pattern lowers, although the takedown and pivot pins will protrude more than usual.
The package includes essential components like takedown/pivot springs, pins, bolt catch assembly, safety selector parts, buffer retainer parts, and an extended magazine catch button.

AERO PRECISION AR 308 M5 LOWER PARTS KIT W/ MOE GRIP FDE
AR 308 M5 LOWER PARTS KITS W/ MOE GRIP

AERO PRECISION

In stock

£164.90 *

The kit includes a Magpul MOE grip, which is a popular upgrade over standard mil-spec furniture.
Aero Precision's AR 308 M5 Lower Parts Kit is designed for .308 AR builds and comes with all necessary components for the lower part assembly.
Available in Black or FDE, the kit provides builders with high-quality parts that enhance the functionality and aesthetics of their AR 308 M5.

CMMG 308 AR LOWER PARTS KIT
308 AR LOWER PARTS KIT

CMMG

In stock

£109.90 *

The kit includes all internal parts required to complete or rebuild an AR lower receiver, specifically for AR .308/DPMS LR-308 pattern lowers.
High-quality components are designed to coordinate seamlessly, ensuring smooth operation of the AR lower receiver.
Parts come in color-coded bags for easy assembly and include a molded-polymer A2 pistol grip and a Mil-Spec trigger with a 6 to 6½ lb. pull.

Show 20 more results (Page 2)

1 - 20 of 61 results

Page: 1 2 3 4 < >

Categories
Restrict search
- Make
- Manufacturer
- Best rated product
  - Top rated products (7)
- Bestsellers
  - Bestseller (7)
- Special Filters
  - Made in USA (83)
- Price
  - -
- New products
  - Only new products (2)
- Stock status
  - In Stock (Brownells USA) (58)
- Feedback

E-mail address / User name

Password

Forgot your password?
Register

Why order from us?

Unrivaled Product Selection

You want it? We got it!

Expert Customer Advice

Via Phone, Chat & Email

US Goods to your doorstep

No customs, no problems

100 days Returns

Shop with a peace of mind

Offers, Promotions & Exclusive Products

Through our weekly newsletter

Shamelessly Honest

We encourage critical product review

Fair Pricing

We pursue a sustainable pricing policy

We won't leave you stranded

Our entire team is made up of passionate gun enthusiasts

Site Navigation

Manufacturer
Best Sellers
New Products
Schematics
Newsletter

Product Categories

Firearms
Rifle Parts
Handgun Parts
Shotgun Parts
Magazines
Reloading

Shooting Accessories
Gunsmith Tools
Optics & Mounting
Gun Cleaning & Chemicals
Emergency & Survival Gear
Becoming a dealer

Ordering

Why us?
Your local dealer
Terms and Conditions
Returns
Delivery information

Customer Service

Contact Us
About Us
Becoming a dealer

Imprint
Privacy policy

Connect

Discord
Instagram
Facebook
LinkedIn
Twitter / X

Secure payment methods

Trade Associations

Welcome!

to Brownells UK, your destination for anything gun related. With our roots in a genuine passion for firearms, we bring you an unmatched selection of Gun Parts, Firearm Accessories, Gunsmithing Tools, Scopes & Red Dot Sights and Expert Knowledge.

Whether you're looking to maintain, repair, or upgrade, we've got what you need!

For Shooters, By Shooters
We share your enthusiasm and know exactly what you're looking for because we're part of the community.

Massive Selection
From the essentials to the unique, find everything under one roof.

Our blend of tradition and innovation
Shop with the convenience of modern technology, backed by a legacy of experience.

Browse our collection and discover why we're the trusted name in shooting sports & hunting.

Prices inclusive of duty & VAT.

Classical view

Mobile view