Recent Products
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Quickview Extended BFAR Grip Arm – Stainless Steel
Extended Grip Arm 304 Stainless Steel Allows you to actually put your hand under the handle to remove the barrel...
Original price was: $50.00.$35.00Current price is: $35.00.In stockAdd to cart-
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Extended BFAR Grip Arm – Stainless Steel
Original price was: $50.00.$35.00Current price is: $35.00.Extended Grip Arm 304 Stainless Steel Allows you to actually put your hand under the handle to remove the barrel...
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Quickview 
80% Low Profile Dual-Feed AR-15 Belt Fed 80% lower receiver (LOWPRO-DUALFEED-80)
80 % Lower with custom machined to fit M249 feed bag & Nut-Sack attachments as well as magazines. Machined by...
80 % Lower with custom machined to fit M249 feed bag & Nut-Sack attachments as well as magazines. Machined by...
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Quickview 
HK21 Reinforcement Rails – HKP HK21 T-Rail Set – 7.62×51 – .308
HK21 Reinforcement Rails High strength 1045 steel CNC machined from a single piece of billet material to a precise fit...
HK21 Reinforcement Rails High strength 1045 steel CNC machined from a single piece of billet material to a precise fit...
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Quickview 
HK21 Barrel 7.62mm – 17.7 inches – WITHOUT HARDWARE
We are making new HK21 barrels to fit the new kits that are now currently in progress at our shop....
We are making new HK21 barrels to fit the new kits that are now currently in progress at our shop....
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Quickview .300 BLK – Belt Fed Upper 12.5″ or 16.5″ Cold Hammer Forged Heavy Barrel
Complete barrel assembly for use with MCR® uppers and our new Belt Fed Upper receiver. Compatible with both systems. (Current expected...
Original price was: $1,119.97.$550.00Current price is: $550.00.In stockAdd to cart-
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.300 BLK – Belt Fed Upper 12.5″ or 16.5″ Cold Hammer Forged Heavy Barrel
Original price was: $1,119.97.$550.00Current price is: $550.00.Complete barrel assembly for use with MCR® uppers and our new Belt Fed Upper receiver. Compatible with both systems. (Current expected...
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Quickview
12.5 inch Cold Hammer Forged M4 -M203 fitting – Chrome Lined barrel
12.5 inch Cold Hammer Forged M4 -M203 fitting - Chrome Lined barrel
12.5 inch Cold Hammer Forged M4 -M203 fitting - Chrome Lined barrel
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Sale Products
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Quickview Extended BFAR Grip Arm – Stainless Steel
Extended Grip Arm 304 Stainless Steel Allows you to actually put your hand under the handle to remove the barrel...
Original price was: $50.00.$35.00Current price is: $35.00.In stockAdd to cart-
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Extended BFAR Grip Arm – Stainless Steel
Original price was: $50.00.$35.00Current price is: $35.00.Extended Grip Arm 304 Stainless Steel Allows you to actually put your hand under the handle to remove the barrel...
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Quickview .300 BLK – Belt Fed Upper 12.5″ or 16.5″ Cold Hammer Forged Heavy Barrel
Complete barrel assembly for use with MCR® uppers and our new Belt Fed Upper receiver. Compatible with both systems. (Current expected...
Original price was: $1,119.97.$550.00Current price is: $550.00.In stockAdd to cart-
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.300 BLK – Belt Fed Upper 12.5″ or 16.5″ Cold Hammer Forged Heavy Barrel
Original price was: $1,119.97.$550.00Current price is: $550.00.Complete barrel assembly for use with MCR® uppers and our new Belt Fed Upper receiver. Compatible with both systems. (Current expected...
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Quickview M16A1 – 80 percent receiver – Partial Fence
Cryostructure M16A1 Profile 80 % Receivers with Partial Fence from Billet This lower is the proper receiver for the...
Original price was: $350.00.$250.00Current price is: $250.00.In stockAdd to cart-
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M16A1 – 80 percent receiver – Partial Fence
Original price was: $350.00.$250.00Current price is: $250.00.Cryostructure M16A1 Profile 80 % Receivers with Partial Fence from Billet This lower is the proper receiver for the...
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Quickview Black Anodized Purpose Built AR-15 Belt Fed 80% lower receiver (BFAR)
Raw 80 Percent Lower with custom machined M249 feed bag attachment Machined by Cryostructure, this 80 percent lower is not...
Original price was: $200.00.$120.00Current price is: $120.00.In stockAdd to cart-
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Black Anodized Purpose Built AR-15 Belt Fed 80% lower receiver (BFAR)
Original price was: $200.00.$120.00Current price is: $120.00.Raw 80 Percent Lower with custom machined M249 feed bag attachment Machined by Cryostructure, this 80 percent lower is not...
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Quickview Original price was: $350.00.$250.00Current price is: $250.00.In stockAdd to cart-
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M16A1 – 100 percent receiver
Original price was: $350.00.$250.00Current price is: $250.00.-
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Quickview M16A1 – Slabside- 80 percent receiver
Cryostructure M16A1 - Slabside Profile 80 % Receivers from Billet Our lower receiver matches the features of the original M16A1...
Original price was: $350.00.$250.00Current price is: $250.00.In stockAdd to cart-
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M16A1 – Slabside- 80 percent receiver
Original price was: $350.00.$250.00Current price is: $250.00.Cryostructure M16A1 - Slabside Profile 80 % Receivers from Billet Our lower receiver matches the features of the original M16A1...
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Top Rated Products
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Quickview AR-15 80% Practice Milling Lower Receiver
Milling Practice Raw 80 Percent Lower ***FOR FIRE CONTROL PRACTICE MILLING ONLY*** 80 percent lower is not an FFL item...
Milling Practice Raw 80 Percent Lower ***FOR FIRE CONTROL PRACTICE MILLING ONLY*** 80 percent lower is not an FFL item...
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FULL SUPER CUSTOM DEEP LASERED – AR-15 80% Lower Receiver
CERRO Raw 80 Percent Lower "Anything you want", except machining cut-out lines. Forged by CERRO & Machined by Cryostructure, this...
CERRO Raw 80 Percent Lower "Anything you want", except machining cut-out lines. Forged by CERRO & Machined by Cryostructure, this...
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BFAR-MOD1 – (RDIAS Compatible) – Purpose Built AR-15 Belt-Fed 100% lower receiver
DIAS COMPATIBLE - 100 % Lower with custom machined to fit M249 feed bag & Nut-Sack attachments. Forged by CERRO...
DIAS COMPATIBLE - 100 % Lower with custom machined to fit M249 feed bag & Nut-Sack attachments. Forged by CERRO...
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Quickview Original price was: $350.00.$250.00Current price is: $250.00.In stockAdd to cart-
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M16A1 – 80 percent receiver
Original price was: $350.00.$250.00Current price is: $250.00.-
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MCR® Magazine Adapter- Steel Reinforced Rigid Carbon Fiber Polycarbonate
So we have a less expensive alternative for the official aluminum MCR® adapter. $145.99 is the price of the standard...
So we have a less expensive alternative for the official aluminum MCR® adapter. $145.99 is the price of the standard...
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Quickview M16A1 – 80 percent receiver – Partial Fence
Cryostructure M16A1 Profile 80 % Receivers with Partial Fence from Billet This lower is the proper receiver for the...
Original price was: $350.00.$250.00Current price is: $250.00.In stockAdd to cart-
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M16A1 – 80 percent receiver – Partial Fence
Original price was: $350.00.$250.00Current price is: $250.00.Cryostructure M16A1 Profile 80 % Receivers with Partial Fence from Billet This lower is the proper receiver for the...
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Best Selling Products
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Quickview 
CERRO AR-15 Flat Top Upper Anodized Black
Manufacturer: CERRO Forging Model: AR-15 / M4 / M-16 Caliber: .223 / 5.56 NATO Finish: BLACK Sights: Picatinny Rail Condition: FACTORY NEW
Manufacturer: CERRO Forging Model: AR-15 / M4 / M-16 Caliber: .223 / 5.56 NATO Finish: BLACK Sights: Picatinny Rail Condition: FACTORY NEW
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Standard Black Lower – 80% Lower Receiver – 80 percent
Ambi bolt release cut - Extremely rare on 80% lowers Also known as 80% machined (just needs trigger and safety...
Ambi bolt release cut - Extremely rare on 80% lowers Also known as 80% machined (just needs trigger and safety...
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Quickview 
Purpose Built AR-15 Belt Fed 80% lower receiver (BFAR)
Raw 80 Percent Lower with custom machined M249 feed bag attachment Machined by Cryostructure, this 80 percent lower is not...
Raw 80 Percent Lower with custom machined M249 feed bag attachment Machined by Cryostructure, this 80 percent lower is not...
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Quickview 
AR-15 80% Lower Receiver – Premium CERRO Forged and Machined – Rear pocket pre-machined
CERRO Raw 80 Percent Lower Forged & Machined by CERRO, this 80 percent lower is not an FFL item and...
From $55.00In stockSelect options This product has multiple variants. The options may be chosen on the product page-
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CERRO Raw 80 Percent Lower Forged & Machined by CERRO, this 80 percent lower is not an FFL item and...
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Purpose Built AR-15 Belt Fed 100% lower receiver (BFAR)
100 % Lower with custom machined to fit M249 feed bag & Nut-Sack attachments. Forged by CERRO & Machined by...
100 % Lower with custom machined to fit M249 feed bag & Nut-Sack attachments. Forged by CERRO & Machined by...
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Quickview Original price was: $25.00.$13.00Current price is: $13.00.In stockAdd to cart-
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