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  6. Cross Machine Tool UPUR4 AR15 Slick Side Upper Receiver - Billet
Cross Machine Tool UPUR4 AR15 Slick Side Upper Receiver - Billet
Cross Machine Tool UPUR4 AR15 Slick Side Upper Receiver - Billet

Cross Machine Tool UPUR4 AR15 Slick Side Upper Receiver - Billet

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On sale $146.00 $140.00
Normal Price:$148.00
Your Savings:$8.00(5%)
Stripped - Capable Of Accepting A Port Door - No Forward Assist - No Shell Deflector
Questions about this item? Ask here.
Item Id: CMT-UPUR4-BLK
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Cross Machine Tool AR15 Billet Slick Side Upper Receiver - UPUR4

The Cross Machine Tool Ultra Precision Upper Receiver (UPUR4) is the perfect mate to your UHP-15 lower receiver or would also be a great match with any mil-spec lower. The UPUR-4 is machined on a 5 axis machining center to reduce the number of operations/setups required to complete. This machining process allows the highest possible accuracy to be obtained over the traditional 3 or 4 axis machining method.

The UPUR-4 is machined from billet 7075 T6 aluminum unlike the more commonly used 6061. Using the 7075 T6 aluminum gives the UPUR-4 a 65% increase in strength and rigidity over 6061 aluminum receivers. The UPUR-4 is designed for increased function, performance and to provide an advanced modern appearance and feel to the AR15 platform weapon system. The UPUR-4 is a precision upper receiver, great for a precision long range rifle build or for a more minimalistic build approach.

Specifications:
- 5 axis machined from billet 7075 T6
- M4 feed ramps
- Engraved T numbers
- 1913 picatinny rail flat top
- Mil-spec type III class II hard coat anodized Black
- Increased wall thickness for added rigidity
- Compatible with mil-spec parts
- Compatible with most aftermarket handguard/rail systems
- Weighs 7.5 oz
- Lifetime warranty against manufacture defects
- Compatible with Tactical Link Enhanced Battery Assist Lever
- Not ported for a forward assist (slick side)
- Capable of accepting a port door (not included)
- Does not have a shell deflector (slick side)

Summary of the differences of Cross Machine Tool's Uppers
UPUR1
- Has a shell deflector
- Is capable of accepting a port door (not included)
- Is ported for a forward assist (not included)
- Has M4 feed ramps

UPUR2
- Has a shell deflector
- Is capable of accepting a port door (not included)
- Is not ported for a forward assist (slick side)
- Has M4 feed ramps

UPUR3
- Does not have a shell deflector (slick side)
- Is not capable of accepting a port door
- Is not ported for a forward assist (slick side)
- Is their only upper that is compatible with 458 SOCOM and 9mm ammo)
- Has M4 feed ramps

UPUR4
- Does not have a shell deflector (slick side)
- Is capable of accepting a port door (not included)
- Is not ported for a forward assist (slick side)
- Has M4 feed ramps

For complete and current information on this item please see the manufacturer's website.
Satisfaction guaranteed. We are so confident that you will be 100% satisfied with this product that we have protected your purchase with our 30 day money back guarantee.
California residents: this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information visit https://www.p65warnings.ca.gov.

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