Best price
$61.99at Brownells
Out of stock checked Sep 29, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells | $61.99checked Sep 29, 2026 | Out of stock | Buy at Brownells |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $61.99 | $61.99 | $61.99 |
Since Sep 28, 2026.
Specifications
- Manufacturer
- Bob Hahin
- Color
- Black
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
Description
Self-lubricating, Delrin(R) loading block replaces the magazine and follower for smooth, single round loading. Bolt holds open after every shot. CNC-machined loading tray ensures proper cartridge alignment and reliable feeding. OBS10 provides a short, match-length loading block. OBS20 is the same size and shape as a 20-round AR-15 magazine; approved for Service Rifle competitions. Mfg: Bob Hahin SPECS: Delrin. OBS10 - Approx. 2A 1/2'''' (6.4cm) long, 7/8'''' (2.2cm) wide, 3'''' (7.6cm) high. OBS20 - Approx. 2A 1/2'''' long, 7/8'''' wide, 5'''' (12.7cm) high. Fits AR-15/M16, .223 cal.
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