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Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM Up to $10.00 Off w/ Free S&H — 2 models

Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM, 12.5in Mid Length, Black, LS-MB-CB-12
Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM, 14.5in Mid Length, Black, LS-MB-CB-14
Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM, 12.5in Mid Length, Black, LS-MB-CB-12
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Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM, 12.5in Mid Length, Black, LS-MB-CB-12
Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM, 14.5in Mid Length, Black, LS-MB-CB-14
2 of 2 images
Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM, 14.5in Mid Length, Black, LS-MB-CB-14

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Questions & Answers
i might just be completely restarted, but how do you get the barrel nut on with the fixed gas block?

It slides over the top. Barrel tapers a lot kkks a criterion core does, It’s very low profiles on top of being around .625 gas block

by HAbel, Verified Owner, May 19, 2025
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Customer Reviews
Most Recent Reviews
Pretty dang good barrel. & PA- Write some reviews on products if they aren’t rated by HAbel, May 19, 2025
Got the barrel on sale for 250 in 13.9. It’s pretty dang smooth, nice balance, tapers down like a Core does around the gas block to roughly a .625 is gas block. I’m not sure how they can mill that thing into a barrel but it’s impressive. Barrel nuts ...
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Most Recent Reviews
High quality barrel by Joel Atkinson, September 13, 2024
I have the 12.5 variation on my arc. Shots well, looks great, gas block is a cool feature. Buying 14.5 to pin a warcomp to.
Most Recent Reviews
Monobloc barrel 1k review by GlockMan, September 12, 2024
I now have 1k rounds through my monobloc barrel and i friggin love this thing. I have heard of situations on forums where people’s set screw and pinned gas blocks move on them after high round counts, rendering the rifle useless. This fear is what dr...
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Most Recent Reviews
Machinist’s Review of Monobloc by Ochoa, September 11, 2024
Spectacular barrel and worth every penny. I am a machinist by trade so knowing what goes into the manufacturing of a barrel like this, considering the gas block is milled out of the same blank, this is truly a piece of art. Fit and finish are spectac...
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Read All 4 Reviews
2 Models Available
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Product Info for Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM

The HM Monobloc barrel includes an integrally machined & patented gas block. Chambered in 5.56 NATO/223 Rem, the 4150 Chromoly Vanadium barrel comes in various lengths. This barrel features a 1:8 twist ratio and a mid-length gas system, with a manganese phosphate coated exterior, chrome lined bore, and match crown for maximum service life, EXCLUSIVE to Lead & Steel!image

All HM Defense barrels are match-grade, tripled-honed & button-rifled for superior accuracy. All barrels feature Mil-spec M4 feed ramp extensions, properly installed & head spaced.

Specifications for Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM:

Manufacturer: Lead & Steel
Color: Black
Finish: Manganese Phosphate
Caliber: 5.56mm
Gas System Length: Mid Length
Threads per Inch: 1/2x28
Barrel Twist Rate: 1-8
Barrel Material: 4150 CMV Steel
Flutes: No
Weight: 1.15 lb

Features of Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM

  • "BombProof" gas system

Package Contents:

  • Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM

Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM Orderable Models

List of Orderable Models

  • Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM, 12.5in Mid Length, Black, LS-MB-CB-12 , MPN: LS-MB-CB-12 , UPC: 7427053011334 , Code: 5Z0-ATB-LSRDS6-LS-MB-CB-12
  • Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM, 14.5in Mid Length, Black, LS-MB-CB-14 , MPN: LS-MB-CB-14 , UPC: 7427053011358 , Code: 5Z0-ATB-LSRDS6-LS-MB-CB-14

Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM Unavailable & Discontinued Models

List of Unorderable Models

  • Lead & Steel L&S Monobloc Barrel - Threaded 5.56MM, 16in Mid Length, Black, LS-MB-CB-16 , MPN: LS-MB-CB-16 , UPC: 7427053011365 , Code: 5Z0-ATB-LSRDS6-LS-MB-CB-16
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