OSA

OSA15 Forged Upper Receiver

OSA15 Forged Upper Receiver Our receivers are excess military-contract capacity that we bring directly to you. As M4A4 configuration with "M4" marks above the gas hole, these are the finest upper...

OSCAR the TactiClam Holographic Slap

OSCAR the TactiClam Holographic Slap OSCAR was born off the beautiful beaches of Rhode Island and is geared up to stack commies. Equipped with a custom AR15 built by OSA and a set of Dual...

OSCAR the TactiClam PVC Patch

OSCAR the TactiClam PVC Patch OSCAR was born off the beautiful beaches of Rhode Island and is geared up to stack commies. Equipped with a custom AR15 built by OSA and a set of Dual NVG’s, he is...

OSCAR the TactiClam Slap

OSCAR the TactiClam Slap OSCAR was born off the beautiful beaches of Rhode Island and is geared up to stack commies. Equipped with a custom AR15 built by OSA and a set of Dual NVG’s, he is...

Pin & Weld Muzzle Device Service

Pin & Weld Muzzle Device Our AR-15 Barrel Pin and Weld Service ensures compliance with ATF regulations by extending your 13.7″, 13.9″, or 14.5″ barrel to the required 16″...

Rosco Manufacturing 11.5" M4 5.56 NATO Barrel

Rosco Manufacturing 11.5" M4 5.56 NATO Barrel This Rosco Manufacturing11.5″ M4 5.56 NATO Barrel is designed to be the perfect addition to any SBR or Pistol build. ALL NFA RULES APPLY! Our 5.56...

Rosco Manufacturing 14.5" M4 5.56 NATO (Mid-Length) Barrel

Rosco Manufacturing 14.5" M4 5.56 NATO (Mid-Length) Barrel This 14.5” M4 5.56 NATO Mid-Length barrel was designed around the USASOC specs for an Improved Upper Receiver Group with a little bit...

Rosco Manufacturing 16" M4 5.56 NATO (Mid-Length) Barrel

Rosco Manufacturing 16" M4 5.56 NATO (Mid-Length) Barrel This 16″ M4 5.56 NATO Mid-Length barrel was designed around the USASOC specs for an Improved Upper Receiver Group with a little bit of...

Serialize 80 Percent AR15 Lower Receiver

ENGRAVING SERVICE FOR YOUR 80 PERCENT AR15 LOWER RECEIVER WORK ORDER FORM WILL BE EMAILED TO YOU ONCE YOU PLACE THE ORDER Please note: We accept MACHINED and NON MACHINED LOWER RECEIVERS OSA offers...

Serialize 80 Percent Handgun Frame

ENGRAVING SERVICE FOR YOUR 80 PERCENT HANDGUN FRAME WORK ORDER FORM WILL BE EMAILED TO YOU ONCE YOU PLACE THE ORDER Please note: We accept MACHINED and NON MACHINED FRAMES OSA offers engraving...