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

Builders pick it 6 to 1 over the Automatics Super Semi-Automatic.
$335.00at Brownells, in stock
Builders pick the Automatics SSA-E X Lightning 6 to 1 over the Automatics Super Semi-Automatic. It is in 19.6% of GunPartPicker builds that have a trigger, against 3.5% for the Automatics Super Semi-Automatic. It costs $90 more today ($335.00 against $245.00), so the Automatics Super Semi-Automatic is the value pick if price comes first.
2 stores we track have the Automatics SSA-E X Lightning in stock. Builders paid a median $280.49 for it when they added it, against $199.79 for the Automatics Super Semi-Automatic. It is most often built with the Bravo Company Bolt Carrier Group and the Radian Raptor Charging Handle &. Both are Geissele parts, so the choice comes down to the model, not the maker.
Builders pick the Geissele Automatics SSA-E X Lightning 5.7 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 | $245.00Brownells | $335.00Brownells |
| Stores in stock | 4 | 2 |
| Type | Two-Stage | Two-Stage |
| Pull Weight | Not listed | 1.5-5 lbs |
| Platform | AR-15 | AR-15 |
| Material | Steel | Not listed |
| Actions |
Every store we track for each part, cheapest in stock first. Prices are checked through the day.