Tag Archives: Cross Machine Tool

Rainier Arms Overthrow Build Breakdown

This is the latest Build Breakdown revolving around the new Rainier Arms Overthrow Lower Receiver featuring a Spartan helmet.  The Build Breakdown series lists out the parts used to build the rifle as pictured with links to product information and purchasing.  Some parts not pictured are not listed.

Upper Receiver

Lower Receiver


BUILD BREAKDOWN #4 Cross Machine Tool PDW

Cross Machine Tool PDW and UHPR-6.70 Mod1 Rail with Tactical Link PDW Grip and Gemtech ONE 7.62 Can
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Here are the ingredients to make this rifle:
Click on product link for more information.

Cross Machine Tool UHP 15PDW Integrated Lower Receiver
Cross Machine Tool UHPR-6.70 Mod1 Rail
Cross Machine Tool UPUR-1 Upper Receiver
Tactical Link PDW Grip
Rainier Arms Match .300BLK Barrel (Stainless Steel)
Gemtech ONE 7.62 Suppressor
Gemtech Quickmount 7.62mm Muzzle Brake
Rainier Arms Back Up Iron Sights
Rainier Arms Ambidextrous Safety Selector
Magpul EMAG (30 Round) Magazine

If you see one of our “ZERO7ONE” photos that you want to see featured on “BUILD BREAKDOWN”, let us know.  Message us on Facebook or send an email to info@zero7one.com.

Cross Machine Tool Releases the UHP15-SSA AMBI Lower Receiver

Cross Machine Tool SSA ambi lower 3

Cross Machine Tool has released the new UHP15-SSA Lower Receiver.  SSA stands for “Smooth Side Ambi”, which features all of the standard Ambidextrous features of the UHP15A Lower Receiver without branding and logos present on the left side of the lower.

Cross Machine Tool SSA ambi lower 2
The purchaser can opt to have Cross Machine Tool to laser engrave a personalized SBR or Trust Information on the receiver.  The laser engraving is at a depth of .003″ which is in line with BATFE requirements and can be placed on either the right side of the receiver above the trigger pin hole or on the bottom of the trigger guard.

Cross Machine Tool SSA ambi lower 1

The 9.9 oz UHP-15SSA is CNC machined from 7075-T6 billet aluminum and is finished in Type III, Class II Anodized Black.  The UHP-15SSA features standard diameter trigger and hammer pin holes, “Safe” and “Fire” selector markings, an Integrally Machined Trigger Guard, a Flared Magwell that is compatible with USGI and PMAGs, an Upper Receiver Tensioning Screw and has a Bolt Catch Screw included.

Cross Machine Tool SSA ambi lower 4

The MSRP of the UHP15-SSA is $229.00, but is available at an Introductory Price of $199.00.  Engraving is an extra $30.

For more information, please visit:


Build Breakdown #4

San Tan Tactical Billet Ambi Lower with CMT UPR-3 Upper, Fortis RED, SWITCH Rail and Hammer Charging Handle, CMC Triggers Tactical Trigger and UCWRG Grip 23 003-1000

San Tan Tactical Billet Ambidextrous Lower Receiver

CMT Tactical UPUR-3 Slick Side Upper Receiver

Fortis Manufacturing 14″ Switch Rail

Fortis Manufacturing Hammer Charging Handle

Umbrella Corporation Grip 23

Mission First Tactical Battlelink Minimalist Stock

Trijicon TA31F ACOG Optic

Shadow Valley Weapons SVCOMP 556

CMC Triggers Single Stage Flat Trigger

Magpul FDE PMAG with Magpod


Umbrella Corporation Bolt Carrier Group

Seekins Precision Ambidextrous Safety Selector

Rainier Arms Low Profile Gas Block

San Tan Tactical Billet Ambi Lower with CMT UPR-3 Upper, Fortis SWITCH and Hammer Charging Handle, CMC Triggers Tactical Trigger and UCWRG Grip 23 005-1000