Lowers
Custom AR lower built for precision and performance
A custom AR lower is the foundation of any reliable AR-style rifle, and precision matters from the start. Country Boy Sports offers custom AR lowers designed for shooters who want durability, proper fit, and long-term performance. Each lower receiver is machined to exacting standards to support smooth operation and compatibility with a wide range of AR components.
Our custom AR lowers are available in multiple configurations, including billet milled designs, lightweight options, and complete lowers assembled with quality internal components and Mil-Spec stocks. Whether you are assembling a custom assault rifle for sport shooting, training, or general use, a properly built lower ensures consistent trigger function, magazine fit, and overall rifle balance.
Country Boy Sports custom AR lowers provide a dependable platform for builders who value precision machining and reliable construction. Pairing a quality lower with a matched upper allows shooters to create a custom AR setup tailored to their specific caliber, barrel length, and performance goals.
CB-15 Billet Milled Lowers
100 CB-15 Billet Milled Complete Lower
Mil-Spec Trigger & Lower Parts, M4 6 Position Mil-Spec Stock
$200
100E CB-15 Billet Milled Complete Lower Mil-Spec Trigger that has been Enhanced, Lower Parts, M4 6 Position Mil-Spec Stock
$325
100E CB-15 Billet Milled Complete Lower Mil-Spec Trigger that has been Enhanced, Lower Parts, M4 6 Position Mil-Spec Stock
$325
100E FDE CB-15 Billet Milled Complete Lower Mil-Spec Trigger that has been Enhanced, Lower Parts S2 6 Position FDE Stock.
$350
102 CB-15 Billet Milled Complete Lower W/2-Stage Trigger S-2 6 Position Stock, Ambidextrous Single Point Sling Adapter and TF Rubber Grip.
$425
102FDE CB-15 Billet Milled Complete Lower W/2-Stage Trigger, S-2 6 Position DE Stock, Ambidextrous Single Point Sling Adapter and Mag-Pul FDE Grip.
$450
103 CB-15 Billet Milled Complete Lower W/2-Stage Trigger, S-1 6 Position Stock W/ Cheek Rest, Ambidextrous Single Point Sling Adapter and TF Rubber Grip.
$425
103 FDE CB-15 Billet Milled Complete Lower W/2-Stage Trigger, S-1 6 Position FDE Stock W/Cheek Rest, Ambidextrous Single Point Sling Adapter Rubber TF Grip.
$450
102 CB-15 Billet Milled Complete Lower W/2-Stage Trigger S-2 6 Position Stock, Ambidextrous Single Point Sling Adapter and TF Rubber Grip.
$425
102 CB-15 Billet Milled Complete Lower W/2-Stage Trigger DMA 6 Position Stock and DMA Rubber Grip.
$425
CB-10 Lowers
108 CB-10 Light Weight Lower with Enhanced Mil Spec Single Stage Trigger, 6 Position Mil Spec Stock and will Accepts SR25 DPMS Style Magazines
$350
109 CB-10 Light Weight Lower with 2 Stage Trigger, S2 6 Position Stock, Rubber TF Grip and will Accepts SR25 DPMS Style Magazines
$500
110 CB-10 Light Weight Lower with 2 Stage Trigger, S1 6 Position Stock with Cheek Rest, and Rubber TF Grip and will Accepts SR25 DPMS Style Magazines
$500
108EN CB-10 Light Weight Lower with Enhanced Mil Spec Single Stage Trigger, S2 6 Position Stock, Rubber TF Grip and will Accepts SR25 DPMS Style Magazines
$400
CB-9 Poly Lower
109 CB-9 Billet Milled Lower for Glock Magazines,
Mil-Spec 6 Position Stock and Single Stage Trigger
$300
CB-9 Poly Pistol Lowers
109 PB CB-9 Billet Milled Lower for Glock Magazines, with legal Adjustable Arm Brace and Enhanced Single Stage Trigger for a Pistol Upper.
$425
CB-15 Forged Pistol Lowers
100PB CB-15 Forged Complete Lower Mil-Spec Trigger & Lower Parts with legal Adjustable Arm Brace for a Pistol Upper.
$300