Products
AR-15 Receiver Extension Installation
Installing a receiver extension (buffer tube) on your AR-15 can be quick and easy if you have the right tools.
Sale!
BLEM: Semi-Complete Uppers FN CHF barrel, FN Wedgelock Handguard, Pinned FN Gas Block
Original price was: $1,299.99.$469.69Current price is: $469.69.
Please read carefully for info:
These are blemished, unmarked, upper receivers with FN Cold Hammer Forged Chrome Lined 16″ barrels (Mid-length gas system) and 14.625″ (FN Marked) Hodge Wedgelock handguards.
These ship with an FN gas block PINNED to the barrel.
These do NOT include a BCG or Charging Handle
Link to barrel (Mid-length Gas system)
These are sold out. We do not anticipate any more uppers.
Release 1: 6/03/2026 (concluded)
Release 2: 6/12/2026 (concluded)
Release 3: 6/17/2026 (concluded)
- Order by 12pm Central for Same Day Shipping
- FREE Shipping on All Orders
- 100% Live Inventory, No Back Orders
- FAST SHIPPING
- HASSLE FREE RETURNS
- EARN REWARDS
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Additional information
| Add Alignment Rod? | No Alignment Rod, .223/5.56/.22LR, 6mm (6 ARC, 6mm MAX, .243, etc), 7.62/.308/.300blk, 6.5mm, 6.8mm /.270, 7mm, 9mm, .338/8.6mm, .45ACP |
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 Kratos Gas Block Installation Guide
Ensure the firearm is unloaded and all ammunition is removed from the area. 

Remove all screws from the gas block
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