Universal Upper Parts

Showing 33–48 of 74 results

• 

  Sigma Six Tactical .750″ STAINLESS STEEL LOW PROFILE MICRO GAS BLOCK

  $14.79 Read more
• 

  Sigma Six Tactical Low Profile Gas Block 0.625 Black Steel

  $9.69 Read more
• 

  Sigma Six Tactical .750 Black Steel Low Profile Gas Block

  $9.89 Read more
• 

  Sigma Six Tactical .750″ LOW PROFILE MICRO GAS BLOCK

  $9.69 Read more
• 

  Sigma Six Tactical .750″ STAINLESS STEEL LOW PROFILE ADJUSTABLE MICRO GAS BLOCK

  $19.29 Read more
• 

  Sigma Six Tactical .750″ STAINLESS STEEL LOW PROFILE MICRO GAS BLOCK

  $12.89 Read more
• Sale!

  SIGMA SIX TACTICAL 0.75″ Gas Block Single Picatinny Rail Mounting

  $9.99 Original price was: $9.99.$3.49Current price is: $3.49. Read more
• Sale!

  sigma six tactical 5 Degree Offset Picatinny 1 Slot Rail Mount

  $6.99 Original price was: $6.99.$4.59Current price is: $4.59. Read more
• 

  Sigma Six Tactical Adjustable Low Profile .750” Gas Block

  $15.39 Read more
• 

  SIGMA SIX TACTICAL AR Low Profile Gas Block, 0.875” Steel Long Style

  $9.69 Read more
• 

  SIGMA SIX TACTICAL AR Low Profile Gas Block, 0.936” Steel Long Style

  $10.29 Read more
• 

  Sigma Six Tactical AR-15 Forward Assist Roll Pin

  $1.99 Add to cart
• 

  SIGMA SIX TACTICAL AR-15 Low Profile Gas Block, 0.750” Steel Long Style

  $8.99 Read more
• Sale!

  Sigma Six Tactical Dovetail to Weaver Mount Rail 100mm

  $14.99 Original price was: $14.99.$3.99Current price is: $3.99. Add to cart
• Sale!

  Sigma Six Tactical Fixed Picatinny Grip w/ Pressure Switch

  $19.99 Original price was: $19.99.$10.79Current price is: $10.79. Read more
• Sale!

  Sigma Six Tactical KeyMod 2″ Section Rail (Red)

  $4.99 Original price was: $4.99.$1.49Current price is: $1.49. Add to cart