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Ar-15 1rd Bob Sled 223/5.56 - Ar-15 Bob Sled 223/5.56 1rd DerlinA(R) Black Short
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SKU: 100001736
Overview
This single-round loading block is designed for AR-15/M16 rifles chambered in .223 caliber when slow-fire shooting calls for deliberate, one-at-a-time loading. It replaces the magazine and follower to support smooth single-round use, while the bolt remains open after each shot. The CNC-machined tray is intended to keep cartridges aligned during loading, and the short match-length format suits benchrest, varminting, and competition use where a compact setup is preferred.
Why Hunters Choose the Bob Hahin
Supports Single-round
Loading for slow-fire competition, benchrest,
Replaces Magazine
Follower for dedicated loading-block use
Bolt Holds
Open after every shot for
Cnc-machined Tray
Helps align cartridges for consistent
Short Match-length
Design suits compact competition setups
Key Features
- Single-round loading for slow-fire competition, benchrest, and varminting.
- Self-lubricating Delrin loading block replaces the magazine and follower.
- Bolt holds open after every shot.
- CNC-machined loading tray helps align cartridges for feeding.
- Short match-length OBS10 design for compact use.
- Fits AR-15/M16 in .223 caliber.
Best Used For
- Slow-fire competition shooters needing single-round loading and bolt hold-open operation.
- Benchrest users who want controlled cartridge placement and consistent loading steps.
- Varmint hunters using AR-15/M16 platforms with .223 caliber cartridges.
- Service Rifle competitors needing the OBS20 magazine-sized version for approved matches.
Specifications
| Approved For | Service Rifle competitions |
|---|---|
| Bolt Hold Open | Yes |
| Capacity | 1 round |
| Cnc Machined Loading Tray | Yes |
| Color | Black |
| Compatibility | AR-15/M16, .223 cal. |
| Height | 3 in (7.6 cm) |
| Length | Approx. 2 1/2 in (6.4 cm) |
| Loading Type | Single round loading |
| Magazine Replacement | Replaces the magazine and follower |
| Material | Delrin |
| Model | OBS10 |
| Model Variant | OBS20 |
| Obs20 Height | 5 in (12.7 cm) |
| Obs20 Length | Approx. 2 1/2 in |
| Obs20 Width | 7/8 in |
| Self Lubricating | Yes |
| Short Match Length Loading Block | Yes |
| Width | 7/8 in (2.2 cm) |
Pros
- Supports single-round loading for slow-fire competition, benchrest, and varminting.
- Replaces the magazine and follower for dedicated loading-block use.
- Bolt holds open after every shot for easy follow-up loading.
- CNC-machined tray helps align cartridges for consistent feeding.
- Short match-length design suits compact competition setups.
- Fits AR-15/M16 rifles chambered in .223 caliber.
Considerations & Trade-offs
- Designed for single-round loading, so it is not intended for standard magazine-fed use or higher-capacity strings of fire.
- The short OBS10 version is match-length and compact, which may be less convenient if you prefer the 20-round magazine-sized OBS20 format for handling or competition rules.
- It is specified for AR-15/M16 in .223 caliber, so compatibility is limited to that platform and cartridge family.
- As a loading block/replacement for the magazine and follower, it serves a specialized role rather than a general-purpose magazine option.
Suggested Comparisons
- AR-15 single-round loading devices
- Benchrest shooting accessories
- Service rifle competition accessories
- Varmint hunting accessories
Suggested Accessories
- AR-15 magazine pouch
- Benchrest shooting rest
- Cleaning kit
- Cartridge case holder
Frequently Asked Questions
What is this Bob Sled used for on an AR-15/M16?
It is a single-round loading block that replaces the magazine and follower for slow-fire competition, benchrest, and varminting. It is listed as fitting AR-15/M16 in .223 caliber.
Does the bolt stay open after each shot?
Yes. The product description states that the bolt holds open after every shot.
What versions are listed for this product?
Two versions are described: OBS10, which is a short, match-length loading block, and OBS20, which is the same size and shape as a 20-round AR-15 magazine and is approved for Service Rifle competitions.
What material is the loading block made from?
The specifications list Delrin, and the description calls it a self-lubricating Delrin loading block.
Will this work with .223/5.56 AR-15 rifles?
The product is listed for AR-15/M16 in .223 caliber, and the title identifies it as .223/5.56. The provided data does not give any further compatibility details beyond that.