The M4E1 Pro Series Lower Build Kit combines precision components with ergonomic design, featuring the Davidson Defense “Sundance” Drop-In Trigger and SB Tactical SBA3 brace for a dependable, high-performance AR-15 foundation. The M4E1 PRO lower receiver is finished in durable anodized black, marked “Cal Multi,” and fully compatible with standard AR-15 parts and magazines.
The “Sundance” trigger offers a crisp 3.5 lb pull with a straight-blade design, available in bold red or black finishes. Paired with the adjustable SBA3 pistol brace—crafted from rugged polymer and offering five-position versatility—this kit delivers enhanced control and adaptability in a lightweight package. Proudly made in the USA and FFL-required, it’s a ready-to-build lower setup for shooters who demand comfort, compliance, and smooth performance.
Name: M4E1 Pro Series ft. Davidson Defense "Sundance" Drop-In Trigger w/SB Tactical SBA3
Lower Receiver: M4E1 PRO Lower Receiver - Anodized Black
Platform: AR-15
Finish: Anodized Black
Markings: "Cal Multi"
Compatibility: Works with standard AR-15 components and magazines
Made In America: Yes
FFL Item: Yes
Trigger: Davidson Defense "Sundance" Ultra Match AR-15 Straight Drop-In Trigger
Pull Weight: 3.5 Lbs.
Trigger Style: Straight
Color: Red, Black
Country of Origin: USA
Pistol Brace: SB Tactical SBA3 Adjustable Pistol Stabilizing Brace
Material: Polymer
Style: Pistol Brace
Color: Black
Adjustability: Seven-position adjustable arm
To view the most up-to-date shipping times Click HERE. To view Warranty, Returns, Terms & Restrictions Click HERE.
