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

Builders pick it 4 to 1 over the B5 Systems Government Issue SOPMOD Stock.
$33.99at KY Gun Company, in stock
Builders pick the Magpul MOE Stock Collapsible 4 to 1 over the B5 Systems Government Issue SOPMOD Stock. It is in 15.7% of GunPartPicker builds that have a stock, against 3.7% for the B5 Systems Government Issue SOPMOD Stock. It is also the cheaper one today: $33.99 at KY Gun Company, $61 less than the B5 Systems Government Issue SOPMOD Stock.
10 stores we track have the Magpul MOE Stock Collapsible in stock. Builders paid a median $30.99 for it when they added it, against $62.50 for the B5 Systems Government Issue SOPMOD Stock. On paper they differ on weight (8 against 11.8). It is most often built with the Bravo Company Bolt Carrier Group and the Geissele Automatics SSA-E X.
Builders pick the Magpul MOE Stock Collapsible 4.2 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 stock & brace 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 | $95.00Brownells | $33.99KY Gun Company |
| Stores in stock | 3 | 10 |
| Stock Type | Collapsible | Collapsible |
| Tube Spec | Mil-Spec | Mil-Spec |
| Color | Black | Black |
| Material | Polymer | Polymer |
| Weight | 11.8 | 8 |
| Actions |
Every store we track for each part, cheapest in stock first. Prices are checked through the day.