Compared on builder picks, today's prices and specs.
Our pick: the builders' favorite

Builders pick it 5 to 1 over the Rise Armament Ra-524 Blitz Performance.
$335.00at Brownells, in stock
Builders pick the Geissele Automatics SSA-E X Lightning 5 to 1 over the Rise Armament Ra-524 Blitz Performance. It is in 19.6% of GunPartPicker builds that have a trigger, against 3.9% for the Rise Armament Ra-524 Blitz Performance. It costs $190 more today ($335.00 against $144.58), so the Rise Armament Ra-524 Blitz Performance is the value pick if price comes first.
2 stores we track have the Geissele Automatics SSA-E X Lightning in stock. Builders paid a median $280.49 for it when they added it, against $119.99 for the Rise Armament Ra-524 Blitz Performance. On paper they differ on type (Two-Stage against Drop-In) and platform (AR-15 against AR-15/AR-10). It is most often built with the Bravo Company Bolt Carrier Group and the EOTECH 3x30.5mm X 21.6mm.
Builders pick the Geissele Automatics SSA-E X Lightning 5 to 1.
Shares come from GunPartPicker's build data: real parts lists people put together while planning a purchase, not sales. Slot share is the share of builds with a trigger that chose this one. Median paid is the price shown when builders picked it, not today's price; the table below has today's prices.
| Spec | ![]() | ![]() |
|---|---|---|
| Lowest in stock | $335.00Brownells | $144.58Classic Firearms |
| Stores in stock | 2 | 9 |
| Type | Two-Stage | Drop-In |
| Pull Weight | 1.5-5 lbs | 1.5-5 lbs |
| Trigger Bow | Not listed | Hybrid |
| Adjustable | Not listed | No |
| Platform | AR-15 | AR-15/AR-10 |
| Material | Not listed | Aluminum |
| Actions |
Every store we track for each part, cheapest in stock first. Prices are checked through the day.