SAA BASE Builder's AR15 Upper Assembly Free Float Kit-3:
- FREE SHIPPING!
16" 5.56 NATO M4 1:7 4150 Chromoly Nitride AR-15 Barrel, Forged stripped Upper + Upper Parts Kit, Nitride BCG & Charging Handle, Gas Block & Tube
Building a new A15 carbine? This SAA Base Builder's M4 Nitride Barrel kit offers everything to begin that custom build.
NOTE: Kit DOES NOT include: Rail/hand guard (no barrel nut, delta ring assembly or end cap either) as well as no muzzle device...& BATTERIES NOT INCLUDED.
This kit includes an M4 profile 4150 Chromoly Nitride 1:7 twist Barrel, low profile gas block with gas tube roll pin included. Forged Upper with all parts to complete the upper (Upper Parts Kit) along with a charging handle, and our SAA Complete Nitride BCG (Bolt Carrier Group), head spaced to the barrel prior to shipping.
The rest of the parts are unassembled so SOME ASSEMBLY REQUIRED, but then again, that's the point.
- Barrel: 16" 5.56 1:7 M4 profile, 4150 Chromoly Nitride, 1/2x28" thread (standard)
- Stripped Upper Receiver: Forged AR-15 7075-T6
- NOTE: M4 Feed Ramps on both Upper Receiver & Barrel extension
- Complete Upper Parts Kit: Forward assist assembly & Dust Cover Assembly
- BCG: SAA Complete Nitride Bolt Carrier Group, Nitrided MPI 9130 Bolt with Phosphate Extractor
- Charging Handle Included
- NOTE: Bolt Confirmed Head Spacing with Barrel
- Low Profile Nitride Steel Gas Block (.750") & Steel Carbine Gas Tube Roll Pin
- All Parts Made in the USA