AR15 lowers, uppers, parts and accessories | Aerospace Arms

At Aerospace Arms, we understand the passion and precision that goes into building and upgrading AR15 rifles.

New to AR-15 building?

Start with our step-by-step guide for choosing a compatible complete upper, complete lower, and the remaining essentials for a first AR-15 build.

Start the First AR-15 Build Guide

Or use the full AR-15 parts checklist and compatibility guide

Whether you're a seasoned builder assembling a custom rifle or an enthusiast seeking the perfect upgrade, our selection of American-made components ensures your AR15 meets the highest standards of performance and reliability.

Bravo Company

BCM RECCE-14 MCMR AR-15 5.56 NATO 14.5" M-LOK Black

Retail: $1,919.00

Was:

Now: $1,775.00

Currently out of stock, check back later
Bravo Company Mfg.

BCM RECCE-16 MCMR AR-15 300BLK 16" M-LOK Black

Retail: $1,919.00

Was:

Now: $1,775.00

Currently out of stock, check back later
Bravo Company Mfg.

BCM RECCE-14 KMR-A13 AR-15 5.56 NATO 14.5" Keymod Black

Retail: $1,919.00

Was:

Now: $1,775.00

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Daniel Defense

Daniel Def.ense M4 Carbine V9 5.56 NATO 16" Crocodile Rattle

Retail: $2,099.00

Was:

Now: $1,890.00

Currently out of stock, check back later
Daniel Defense

Daniel Defense M4 Carbine V7SLW 5.56 NATO 14.5" 32rd M-LOK

Retail: $2,103.00

Was:

Now: $1,955.00

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Bravo Company Mfg.

BCM MID-16 MOD-2 5.56 NATO 16" Mid-Length Black

Retail: $1,952.00

Was:

Now: $1,805.00

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Bravo Company Mfg.

BCM RECCE-16 KMR-A AR-15 5.56 NATO 16" Keymod FDE

Retail: $1,950.00

Was:

Now: $1,775.00

Currently out of stock, check back later
Bravo Company Mfg.

BCM RECCE-16 KMR-A AR-15 5.56 NATO 16" Dark Bronze

Retail: $1,950.00

Was:

Now: $1,775.00

Currently out of stock, check back later
Bravo Company Mfg.

BCM RECCE-16 MCMR AR-15 5.56MM 16" M-LOK Bronze

Retail: $2,028.00

Was:

Now: $1,875.00

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Bravo Company Mfg.

BCM RECCE-16 MCMR AR-15 5.56MM 16" M-LOK Flate Dark Earth

Retail: $2,028.00

Was:

Now: $1,875.00

Currently out of stock, check back later
Daniel Defense

Daniel Defense M4 Carbine V7 5.56x45 16" 32rd Rattlecan

Retail: $2,215.00

Was:

Now: $2,060.00

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Daniel Defense

Daniel Defense M4 Carbine V7 MSP 5.56x45 16" 32rd M-LOK Brown

Retail: $2,215.00

Was:

Now: $2,060.00

Currently out of stock, check back later
Daniel Defense

Daniel Defense M4 Carbine V7 5.56x45 16" 32rd M-LOK FDE

Retail: $2,215.00

Was:

Now: $2,060.00

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Daniel Defense

Daniel Defense M4 Carbine V7 5.56x45 16" 32rd M-LOK Cobalt

Retail: $2,215.00

Was:

Now: $2,060.00

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Daniel Defense

Daniel Defense M4 Carbine V9 5.56x45 16" 32rd Quad Rail

Retail: $2,231.00

Was:

Now: $2,075.00

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FN America

FN FN15 DMR3 5.56MM 18" 30rd M-Lok Black

Retail: $2,249.00

Was:

Now: $2,039.00

Currently out of stock, check back later
Daniel Defense

Daniel Defense DD4 V7 SLW Pinned 14.5" Carbine 5.56x45 32rd Black

Retail: $2,250.00

Was:

Now: $2,093.00

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Daniel Defense

Daniel Defense DD4 V7 RIII 16" Carbine 5.56x45 32rd Black

Retail: $2,250.00

Was:

Now: $2,093.00

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Daniel Defense

Daniel Defense M4 Hunter 5.56x45 18" 32rd Kryptek Highlander

Retail: $2,299.00

Was:

Now: $2,138.00

Currently out of stock, check back later
Bravo Company Mfg.

BCM RECCE-16 MCMR Precision 5.56MM 16" M-LOK Black

Retail: $2,093.00

Was:

Now: $1,936.00

Currently out of stock, check back later
Daniel Defense

Daniel Defense M4 Carbine V7PRO 5.56x45 18" 32rd No Sights

Retail: $2,328.00

Was:

Now: $2,165.00

Currently out of stock, check back later
Bravo Company Mfg.

BCM RECCE-14 MCMR AR-15 5.56MM 14.5" M-LOK Flat Dark Earth

Retail: $2,157.00

Was:

Now: $1,995.00

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Bravo Company Mfg.

BCM Recce 14 MCMR AR-15 5.56MM 14.5" M-LOK Bronze

Retail: $2,157.00

Was:

Now: $1,995.00

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Daniel Defense

Daniel Defense M4 Carbine M4A1 5.56x45 14.5" 32rd BLK/FDE

Retail: $2,403.00

Was:

Now: $2,236.00

Currently out of stock, check back later

Bravo Company

BCM RECCE-14 MCMR AR-15 5.56 NATO 14.5" M-LOK Black

Features and Specifications: Caliber 223 Rem5.56 NATO Model REECE-14 MCMR Stock Finish

Retail: $1,919.00

Was:

Now: $1,775.00

Currently out of stock, check back later
Bravo Company Mfg.

BCM RECCE-16 MCMR AR-15 300BLK 16" M-LOK Black

Features and Specifications: Caliber: .300 AAC Blackout Twist: 1:7" Barrel Length: 16" Magazine Capacity: 30 rounds Overall Length: 32.5" Weight: 6.1lbs. Action: Semi-Automatic

Retail: $1,919.00

Was:

Now: $1,775.00

Currently out of stock, check back later
Bravo Company Mfg.

BCM RECCE-14 KMR-A13 AR-15 5.56 NATO 14.5" Keymod Black

Features and Specifications: UPPER RECEIVER Receiver Machined from Aluminum Forgings 7075-T6 and Hardcoat Anodized per MIL-A-8625F, Type III, Class 2 M4 Feed Ramp Flat Top with Laser...

Retail: $1,919.00

Was:

Now: $1,775.00

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Daniel Defense

Daniel Def.ense M4 Carbine V9 5.56 NATO 16" Crocodile Rattle

Features and Specifications: Limited Series Logo engraved on the Magwell. Mil-Spec Upper with Indexing Marks and M4 Feed Ramps. Chrome Moly Vanadium Steel, Cold Hammer Forged, Chrome Lined...

Retail: $2,099.00

Was:

Now: $1,890.00

Currently out of stock, check back later
Daniel Defense

Daniel Defense M4 Carbine V7SLW 5.56 NATO 14.5" 32rd M-LOK

Features and Specifications: LOWER RECEIVER: Mil-Spec with Enhanced Flared Magazine Well and Rear Receiver QD Swivel Attachment Point. CNC Machined of 7075-T6 Aluminum UPPER RECEIVER: Mil-Spec with...

Retail: $2,103.00

Was:

Now: $1,955.00

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Bravo Company Mfg.

BCM MID-16 MOD-2 5.56 NATO 16" Mid-Length Black

Features and Specifications: Caliber: .223 Remington/5.56 Nato Twist: 1:7" Barrel Length: 16" Magazine Capacity: 30 rounds Overall Length: 32.5" Weight: 6.7lbs. Action: Semi-Automatic (1) 30RD...

Retail: $1,952.00

Was:

Now: $1,805.00

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Bravo Company Mfg.

BCM RECCE-16 KMR-A AR-15 5.56 NATO 16" Keymod FDE

Features and Specifications: Caliber: 5.56 x 45mm NATO Barrel: 16" chrome lined Twist: 1:7" BCM KMR-A13 Free Float Handguard BCM KeyMod QD Sling Swivel Mount BCMGUNFIGHTER Charging Handle BCM Mod 0...

Retail: $1,950.00

Was:

Now: $1,775.00

Currently out of stock, check back later
Bravo Company Mfg.

BCM RECCE-16 KMR-A AR-15 5.56 NATO 16" Dark Bronze

Features and Specifications: Caliber 223 Rem5.56 NATO Model REECE-16 KMR Stock Finish

Retail: $1,950.00

Was:

Now: $1,775.00

Currently out of stock, check back later
Bravo Company Mfg.

BCM RECCE-16 MCMR AR-15 5.56MM 16" M-LOK Bronze

Features and Specifications: BCM® MCMR Hand Guard 14.5" Government Profile Barrel 1/7 Twist Rate BCM® Compensator 11595E Independently Certified Mil-Spec Barrel Steel<

Retail: $2,028.00

Was:

Now: $1,875.00

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Bravo Company Mfg.

BCM RECCE-16 MCMR AR-15 5.56MM 16" M-LOK Flate Dark Earth

Features and Specifications: BCM® MCMR Hand Guard 14.5" Government Profile Barrel 1/7 Twist Rate BCM® Compensator 11595E Independently Certified Mil-Spec Barrel Steel<

Retail: $2,028.00

Was:

Now: $1,875.00

Currently out of stock, check back later
Daniel Defense

Daniel Defense M4 Carbine V7 5.56x45 16" 32rd Rattlecan

Features and Specifications: LOWER RECEIVER: Mil-Spec with Enhanced Flared Magazine Well and Rear Receiver QD Swivel Attachment Point. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat...

Retail: $2,215.00

Was:

Now: $2,060.00

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Daniel Defense

Daniel Defense M4 Carbine V7 MSP 5.56x45 16" 32rd M-LOK Brown

Features and Specifications: LOWER RECEIVER: Mil-Spec with Enhanced Flared Magazine Well and Rear Receiver QD Swivel Attachment Point. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat...

Retail: $2,215.00

Was:

Now: $2,060.00

Currently out of stock, check back later
Daniel Defense

Daniel Defense M4 Carbine V7 5.56x45 16" 32rd M-LOK FDE

Features and Specifications: LOWER RECEIVER: Mil-Spec with Enhanced Flared Magazine Well and Rear Receiver QD Swivel Attachment Point. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat...

Retail: $2,215.00

Was:

Now: $2,060.00

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Daniel Defense

Daniel Defense M4 Carbine V7 5.56x45 16" 32rd M-LOK Cobalt

Features and Specifications: LOWER RECEIVER: Mil-Spec with Enhanced Flared Magazine Well and Rear Receiver QD Swivel Attachment Point. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat...

Retail: $2,215.00

Was:

Now: $2,060.00

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Daniel Defense

Daniel Defense M4 Carbine V9 5.56x45 16" 32rd Quad Rail

Features and Specifications: LOWER RECEIVER: Mil-Spec with Enhanced Flared Magazine Well and Rear Receiver QD Swivel Attachment Point. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat...

Retail: $2,231.00

Was:

Now: $2,075.00

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FN America

FN FN15 DMR3 5.56MM 18" 30rd M-Lok Black

Features and Specifications: Caliber 5.56x45mm NATO Gun Platform AR-Style Stock Finish Group

Retail: $2,249.00

Was:

Now: $2,039.00

Currently out of stock, check back later
Daniel Defense

Daniel Defense DD4 V7 SLW Pinned 14.5" Carbine 5.56x45 32rd Black

Features and Specifications: Fully ambidextrous lower 14.5" chrome-lined, heavy phosphate coated lightweight profile barrel 13.5" DD4 flat-front rail - M-LOK and sling attachment points Pinned &...

Retail: $2,250.00

Was:

Now: $2,093.00

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Daniel Defense

Daniel Defense DD4 V7 RIII 16" Carbine 5.56x45 32rd Black

Features and Specifications: Fully ambidextrous lower 16" chrome-lined, heavy phosphate coated, hammer forged, Government profile barrel Mid length gas system Daniel Defense Flash Suppresor 15" DD4...

Retail: $2,250.00

Was:

Now: $2,093.00

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Daniel Defense

Daniel Defense M4 Hunter 5.56x45 18" 32rd Kryptek Highlander

Features and Specifications: LOWER RECEIVER: Mil-Spec with Enhanced Flared Magazine Well and Rear Receiver QD Swivel Attachment Point. CNC Machined of 7075-T6 Aluminum UPPER RECEIVER: Mil-Spec with...

Retail: $2,299.00

Was:

Now: $2,138.00

Currently out of stock, check back later
Bravo Company Mfg.

BCM RECCE-16 MCMR Precision 5.56MM 16" M-LOK Black

Features and Specifications: Caliber: 5.56mm NATO Barrel: 16" Twist: 1:8" BCMGUNFIGHTER™ MOD 3 Pistol Grip Overall length: 32.5" Weight: 6.5 lbs

Retail: $2,093.00

Was:

Now: $1,936.00

Currently out of stock, check back later
Daniel Defense

Daniel Defense M4 Carbine V7PRO 5.56x45 18" 32rd No Sights

Features and Specifications: LOWER RECEIVER: Mil-Spec with Enhanced Flared Magazine Well and Rear Receiver QD Swivel Attachment Point. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat...

Retail: $2,328.00

Was:

Now: $2,165.00

Currently out of stock, check back later
Bravo Company Mfg.

BCM RECCE-14 MCMR AR-15 5.56MM 14.5" M-LOK Flat Dark Earth

Features and Specifications: BCM® MCMR Hand Guard 14.5" Government Profile Barrel 1/7 Twist Rate BCM® Compensator - Pinned & Welded 11595E Independently Certified

Retail: $2,157.00

Was:

Now: $1,995.00

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Bravo Company Mfg.

BCM Recce 14 MCMR AR-15 5.56MM 14.5" M-LOK Bronze

Features and Specifications: BCM® MCMR Hand Guard 14.5" Government Profile Barrel 1/7 Twist Rate BCM® Compensator - Pinned & Welded 11595E Independently Certified Mil-Spec Barrel Steel Mid-Length...

Retail: $2,157.00

Was:

Now: $1,995.00

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Daniel Defense

Daniel Defense M4 Carbine M4A1 5.56x45 14.5" 32rd BLK/FDE

Features and Specifications: LOWER RECEIVER: Mil-Spec with Enhanced Flared Magazine Well and Rear Receiver QD Swivel Attachment Point. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat...

Retail: $2,403.00

Was:

Now: $2,236.00

Currently out of stock, check back later