CMMG AR-15 Lower Parts Kit | No Grip/Fire Control | 55CA601

The CMMG AR-15 Lower Parts Kit (55CA601) provides the common internal components used to assemble or restore an AR-15 lower receiver while excluding commonly upgraded items. The kit contains mil-spec parts such as the bolt catch, magazine release parts, takedown/pivot pins, and buffer retainer. It does not include the pistol grip, fire control group (trigger and hammer), or the trigger guard. This kit is appropriate for custom AR-15 builds and for gunsmithing or range maintenance tasks where replacement small parts are required.

Product Specifications

• The manufacturer is CMMG.
• The manufacturer part number is 55CA601.
• The kit fits AR-15 lower receivers.
• The finish is Black Matte.
• The UPC is 815835015408.
• The kit includes a bolt catch and roll pin.
• The kit includes a bolt catch plunger and spring.
• The kit includes trigger and hammer retaining pins.
• The kit includes a safety selector, detent, and spring.
• The kit includes a magazine catch, spring, and release button.
• The kit includes pivot and takedown pins, detents, and springs.
• The kit includes a buffer retainer and spring.
• The kit does not include pistol grip, fire control group, or trigger guard.
• The material is listed as Various.
• The unit condition is New.

For builders who prefer to select their own grips and trigger components, this CMMG kit supplies the essential mil-spec small parts needed to complete a lower receiver while leaving upgrade decisions to the shooter. Its parts set streamlines assembly and repair work so you can focus on fit, ergonomics, and performance choices for the components you value most.