Aim Surplus has a Spike's tactical mid-length upper - complete with BCG and heavy tungsten filled buffer. I was trying to wait for this but got impatient and went with a RRA upper instead. Try using promo code: gundeals for $15 off.
Specifications:
* Spike's Tactical M4 flat top upper receiver, Machined from a 7075 T6 Mil-Spec Forging with Mil-Spec Type III Hard coat Anodized finish, T-markings, Spike’s logo and M4 feed ramps.
* Barrel is 4150 Chromoly Vanadium Alloy, M4 barrel extension, Chrome chamber and bore, 5.56mm Nato chamber, 1:7 Twist, Magnetic particle testing on every barrel, Phosphate finish.
* Government Contour barrel with mid-length gas system.
* Barrel is Phosphate finished under the .625 F marked A2 front sight base.
* The M16 carriers are Chrome lined with a Mil-Spec phosphate finish.
* Forged Mil-Spec carrier key, Chrome lined, attached with Grade 8 hardware and Properly staked.
* MP tested bolt, Each extractor is fitted with a Mil-Spec black insert and Mil-Spec Viton o-ring.
* Magpul MOE heat shield lined black handguards.
* A2 Flash Hider.
* Includes ST-T2 buffer.
http://www.aimsurplus.com/product.as...MOE&groupid=55
Specifications:
* Spike's Tactical M4 flat top upper receiver, Machined from a 7075 T6 Mil-Spec Forging with Mil-Spec Type III Hard coat Anodized finish, T-markings, Spike’s logo and M4 feed ramps.
* Barrel is 4150 Chromoly Vanadium Alloy, M4 barrel extension, Chrome chamber and bore, 5.56mm Nato chamber, 1:7 Twist, Magnetic particle testing on every barrel, Phosphate finish.
* Government Contour barrel with mid-length gas system.
* Barrel is Phosphate finished under the .625 F marked A2 front sight base.
* The M16 carriers are Chrome lined with a Mil-Spec phosphate finish.
* Forged Mil-Spec carrier key, Chrome lined, attached with Grade 8 hardware and Properly staked.
* MP tested bolt, Each extractor is fitted with a Mil-Spec black insert and Mil-Spec Viton o-ring.
* Magpul MOE heat shield lined black handguards.
* A2 Flash Hider.
* Includes ST-T2 buffer.
http://www.aimsurplus.com/product.as...MOE&groupid=55
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