This is a LARGE frame receiver.  It is designed for our N6 line of LARGE frame receivers and will not work on a AR-15 (N4) SMALL frame upper

• Noveske 4th Generation precision machined billet receiver from 7075-T6 aluminum
• Oversized flared magazine well
• Improved ergonomic integrated oversized trigger guard
• Ambidextrous bolt release
• Ambidextrous magazine release with improved fencing
• Hardcoat type III anodizing
• Adjustable tension screw for perfect fit between upper and lower
• Noveske marked takedown and pivot pin. Rear is retained under the grip by a set screw

This is a LARGE frame receiver.  It is designed for our N6 line of LARGE frame receivers and will not work on a AR-15 (N4) SMALL frame upper

• Noveske 4th Generation precision machined billet receiver from 7075-T6 aluminum
• Oversized flared magazine well
• Improved ergonomic integrated oversized trigger guard
• Ambidextrous bolt release
• Ambidextrous magazine release with improved fencing
• Hardcoat type III anodizing
• Adjustable tension screw for perfect fit between upper and lower
• Noveske marked takedown and pivot pin. Rear is retained under the grip by a set screw