JP Two-Piece Adjustable Gas Block with Detent, .625 Bore, Black Stainless, Ultra Low Profile

JP Two-Piece Adjustable Gas Block with Detent, .625 Bore, Black Stainless, Ultra Low Profile

JPGS-13D2 is the .625" model in our D2 Series lineup—an ultra-minimized adjustable gas block that combines precision, durability, and compactness. Designed to fit under virtually any handguard, this low-profile two-piece block allows easy installation even on barrels with pin-and-weld muzzle devices. The forward-facing D2 adjustment nut eliminates interference issues, sheds fouling, and doubles the adjustment clicks per rotation, providing extremely fine gas control ideal for SBRs and other high-pressure, short-dwell systems.

Specification:

• Barrel Diameter: .625"
• Design: Low profile - 2-piece
• Material: 416 stainless steel
• Finish: Black
• Weight: 53.6 g / 1.89 oz
• Length: 2.22 cm / 0.875"
• Height: 2.92 cm / 1.15" (overall), 1.93 cm / 0.76" (over bore)
• Width: 2.97 cm / 1.17"
• Attachment: (2) 6-32 × 3/8" socket head screws (included)
• Gas tube hardware: (1) 5/64" × 5/16" roll pin (included)
• Adjustment: 5/32" hex or flat screwdriver

Features:

• Slim Profile Design: Streamlined, low-profile form fits beneath even the tightest handguards, including JP M-LOK Series models.
• Short Journal Optimized: Compact length provides an excellent fit on barrels with short gas block journals (e.g., Proof barrels).
• Enhanced Dirt Tolerance: External detent mechanism improves fouling resistance, while the robust 5/32" drive allows extra torque to clear carbon buildup.
• Minute Adjustment Refinement: 52 distinct clicks between fully open and closed for precise and repeatable gas tuning.
• Versatile Adjustment Options: Forward-facing adjustment nut accepts 5/32" hex or flat screwdriver tools.
• Two-Piece Construction: Allows installation without removing pinned or welded muzzle devices.

JP Enterprise Original Reference: JPGS-13D2