BCM Standard 16" M4 SOCOM Upper Receiver Group
BCM Standard 16" M4 SOCOM complete upper with an F-marked fixed front sight base and no handguard, built to take the two-piece Knight's Armament M4 RAS drop-in quad rail. The fixed front sight over a carbine-gas 16" SOCOM-profile barrel is the geometry a Block 1 clone needs.
- Price
- $610
- Weight
- 4 lb
- Brand
- Bravo Company Manufacturing
- Category
- Uppers
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Features
- •16" SOCOM-profile barrel
- •5.56 NATO chamber
- •1:7 twist rate
- •Carbine-length DI gas system
- •F-marked fixed front sight base
- •Chrome-lined bore, MIL-B-11595E CMV steel
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Overview
The BCM Standard 16" M4 SOCOM upper is the fixed-front-sight host a Block 1 clone is built around. The F-marked front sight base over a carbine-gas barrel is the exact geometry a two-piece Knight's Armament M4 RAS drop-in quad rail clamps onto, so this upper takes the defining Block 1 rail without a barrel-nut change. It ships bare from the front sight forward, with no handguard, because the KAC M4 RAS is the handguard you add.
The 16" SOCOM-profile barrel is rifle-legal as shipped, so the build needs no NFA paperwork and no pin-and-weld to clear the 16-inch minimum. The barrel is forged from MIL-B-11595E CMV steel with a chrome-lined bore, manganese phosphate finish, and a 1:7 twist that runs the full range of 5.56 defensive and training loads. Every barrel is HPT/MPI inspected.
It ships with a BCM bolt carrier group (a current BCM promo), so the bolt is handled; you add a charging handle to complete the upper, then it bolts onto a stripped FN-marked lower and runs. The combination of an F-marked fixed front sight, carbine-length gas, and a delta ring is precisely the spec the KAC M4 RAS needs, which is what keeps a build wearing this upper a true Block 1 and not a Block 2.
Key Features
- F-marked fixed front sight base, the mount a two-piece KAC M4 RAS drop-in clamps over
- 16" SOCOM-profile barrel, rifle-legal with no NFA paperwork or pin-and-weld
- MIL-B-11595E CMV steel with chrome-lined bore and manganese phosphate finish
- Carbine-length DI gas system, the spec the KAC M4 RAS and delta ring require
- USGI 5.56 NATO chamber with 1:7 twist rate
- BCM bolt carrier group included as a current promo (charging handle adds separately)
- HPT/MPI inspected, BCM quality control
Pros
- +F-marked fixed front sight base is exactly what a two-piece drop-in KAC M4 RAS clamps over, true Block 1 geometry rather than a RIS II or free-float front end
- +16" SOCOM-profile barrel ships rifle-legal with no NFA paperwork and no pin-and-weld
- +Carbine-length gas and a delta ring match the spec the KAC M4 RAS needs to fit
- +Ships with a BCM bolt carrier group (current promo), so the bolt is handled out of the box
- +Chrome-lined CMV barrel and BCM quality control hold up under high round counts
Cons
- −No handguard included, you buy the KAC M4 RAS separately to finish the front end
- −No charging handle included, you add one to complete the upper
- −Not a free-float design, so rail-mounted accessories load the barrel and affect accuracy
- −BCM batches sell out and restock in waves, so stock is intermittent
Detailed Specifications
- barrelLength
- 16"
- chamber
- 5.56 NATO
- Material
- MIL-B-11595E CMV steel barrel
- Finish
- Chrome-lined bore, manganese phosphate barrel, Type III hard coat anodized receiver
- twist
- 1:7
- gasSystem
- Carbine-length DI
- frontSight
- F-marked fixed front sight base
- muzzleThreads
- 1/2x28 TPI
- handguard
- None included (takes the two-piece KAC M4 RAS)
- weight
- 64 oz (approximately, bare upper without rail)
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Add the BCM Standard 16" M4 SOCOM Upper Receiver Group to your build and see how it enhances your platform.