User Ratings
No ratings yet
Be the first to review this product
SLR Sentry 6 .625 Adjustable Gas Block w/.450 in. Set Screw Spacing
- .450 inch Set Screw Spacing. Note: If you have a barrel with no dimple or one dimple under the gas port either our .400 or .450 set screw spacing blocks will work fine; there is no difference in the blocks, just the front set screw location.
- 15-position adjustability from 0 to 0.125 inch port opening.
- Metering screw and screw bore design allows repeatability and reliability only SLR has been able to deliver.
- Single tool click to adjust gas metering.
- Melonite finish 4140 Nexturn Swiss precision metering screw.
- Proprietary Alloy Flat Spring with 1400 degree temper.
- Melonite finish 4140 detent plunger.
- USES STANDARD GAS TUBE.
- Works with ALL AR15/AR10 Handguards.
- Included Accessories: Tool, roll pin and mounting screws
Specifications
- Manufacturer: SLR
- Coating: Melonite QPQ Finish
- Gas Block Journal Size-Diameter: .625 in
- Gun Make: AR Platform
- Additional Features: w/.450 in. Set Screw Spacing
- Condition: New
- Gas System Type: Direct Impingement
Specifications
- Manufacturer:
- Slr
- Category:
- gas-block
- Platforms:
- AR-10
- Weight:
- 1.3 oz
- MPN:
- SA6450SM
- Required Component:
- Yes
Parts Cabinet
Track parts you own or plan to buy.
Where to Buy
Have one to sell?
Sponsored
MantisX
The smart way to train your AR build
Built your rifle — now train it. BlackBeardX installs in minutes and turns your AR into a full dry fire system with smart feedback on every pull.
Shop BlackBeardXPrice History
Current
$141.64
Lowest
$141.64
Highest
$141.64
Price Alert
Sign in to save a target price and receive an email when this component drops.
Sign In to Set AlertBundle Package
This is a bundled product that includes multiple components. The exact contents may vary - check the product description for more details.
• Complete assembly ready to use
• Multiple components included
• Value package pricing
Similar Products
.750 Low Profile Gas Block
Aero Precision
$28.00
Aero Precision Adjustable .750 Lower Profile Gas Block - APRH101614C
Aero Precision
$55.79
Superlative Arms Bleed Off Clamp On Adjustable Low Profile Gas Block AR-15, LR-308 0.750" Black Melonite
Superlative Arms
$75.69
Superlative Arms Solid Set Screw Direct Impingement Adjustable Gas Block 0.875" x 1", Tan
Superlative Arms
$69.33
Badger Ordnance Mk 12 SPR Gas Block AR-15, LR-308 0.750 Black
Badger Ordnance
$58.94
.750 Adjustable Steel Gas Block Gen. 3 — Low Profile Set Screw AR-15/LR-308
AR-Stoner
$26.57
JP Enterprises A2 Style Gas Block 0.75" Black
Jp Enterprises
$154.99
BCM .75" Low Profile Gas Block, Black Phosphate - LGB-750
Bravo Company Manufacturing (BCM)
$44.99
Builds Using This Part
No builds yet — be the first to use this part.
Related Guides
Guide
AR-10 Barrel Length, Gas System, and Intended Use
How AR-10 barrel length and gas system choices affect weight, recoil, and role fit for hunting, precision, and general-purpose rifles.
3 min read
Guide
AR-15 Components: A Complete Reference Guide
A comprehensive overview of every major component in an AR-15 build—including what's inside bolt carrier groups and parts kits—organized by assembly for new builders.
12 min read
Guide
AR-15 Malfunction Diagnosis: Reading What Your Rifle Is Telling You
A systematic guide to diagnosing AR-15 malfunctions (failure to feed, failure to extract, failure to eject, and double feeds) with root causes and how to isolate them.
7 min read